taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
93268783967C702BFDCCF9B6FC87FE36.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988388/files/figure.png	https://doi.org/10.5281/zenodo.14988388	Fig. 5. Endocerida of the Vormsi–Pirgu regional stages, Estonia. A–B. Cameroceras hasta (Eichwald, 1857). A. Specimen TUG 42-373 from Saaremõisa (Lyckholm) old quarry, Vormsi Regional Stage, dorsal view. B. Dorsal view of the deformed specimen TUG 1745-240 from Saxby old quarry, Pirgu Regional Stage. C. Cameroceras regulus (Eichwald, 1860), polished median section of specimen TUG 939-75 from Nõmmeküla quarry, Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A–B.	Fig. 5. Endocerida of the Vormsi–Pirgu regional stages, Estonia. A–B. Cameroceras hasta (Eichwald, 1857). A. Specimen TUG 42-373 from Saaremõisa (Lyckholm) old quarry, Vormsi Regional Stage, dorsal view. B. Dorsal view of the deformed specimen TUG 1745-240 from Saxby old quarry, Pirgu Regional Stage. C. Cameroceras regulus (Eichwald, 1860), polished median section of specimen TUG 939-75 from Nõmmeküla quarry, Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A–B.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783967C702BFDCCF9B6FC87FE36.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988390/files/figure.png	https://doi.org/10.5281/zenodo.14988390	Fig. 6. Diagrams of morphological variability of specimens of Cameroceras hasta (Eichwald, 1857), Pirgu–Vormsi regional stages, Estonia. A. Relative chamber spacing (RCL). B. Relative siphuncle position (RSP).	Fig. 6. Diagrams of morphological variability of specimens of Cameroceras hasta (Eichwald, 1857), Pirgu–Vormsi regional stages, Estonia. A. Relative chamber spacing (RCL). B. Relative siphuncle position (RSP).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783967B702BFDDFFDA9FED9F8A8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988388/files/figure.png	https://doi.org/10.5281/zenodo.14988388	Fig. 5. Endocerida of the Vormsi–Pirgu regional stages, Estonia. A–B. Cameroceras hasta (Eichwald, 1857). A. Specimen TUG 42-373 from Saaremõisa (Lyckholm) old quarry, Vormsi Regional Stage, dorsal view. B. Dorsal view of the deformed specimen TUG 1745-240 from Saxby old quarry, Pirgu Regional Stage. C. Cameroceras regulus (Eichwald, 1860), polished median section of specimen TUG 939-75 from Nõmmeküla quarry, Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A–B.	Fig. 5. Endocerida of the Vormsi–Pirgu regional stages, Estonia. A–B. Cameroceras hasta (Eichwald, 1857). A. Specimen TUG 42-373 from Saaremõisa (Lyckholm) old quarry, Vormsi Regional Stage, dorsal view. B. Dorsal view of the deformed specimen TUG 1745-240 from Saxby old quarry, Pirgu Regional Stage. C. Cameroceras regulus (Eichwald, 1860), polished median section of specimen TUG 939-75 from Nõmmeküla quarry, Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A–B.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396787029FDCEFCB7FBC2FCD1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988392/files/figure.png	https://doi.org/10.5281/zenodo.14988392	Fig. 7. Actinocerida Teichert, 1933 of the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras bekkeri Troedsson, 1926, specimen GIT 426-1120 from Kasari, Vormsi Regional Stage, dorsal view. B. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm for all figures, same scale in A–C.	Fig. 7. Actinocerida Teichert, 1933 of the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras bekkeri Troedsson, 1926, specimen GIT 426-1120 from Kasari, Vormsi Regional Stage, dorsal view. B. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm for all figures, same scale in A–C.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396787029FDCEFCB7FBC2FCD1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127637/files/figure.png	https://doi.org/10.5281/zenodo.15127637	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396667034FDDAFEB0FC52FADF.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988392/files/figure.png	https://doi.org/10.5281/zenodo.14988392	Fig. 7. Actinocerida Teichert, 1933 of the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras bekkeri Troedsson, 1926, specimen GIT 426-1120 from Kasari, Vormsi Regional Stage, dorsal view. B. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm for all figures, same scale in A–C.	Fig. 7. Actinocerida Teichert, 1933 of the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras bekkeri Troedsson, 1926, specimen GIT 426-1120 from Kasari, Vormsi Regional Stage, dorsal view. B. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm for all figures, same scale in A–C.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396667034FDDAFEB0FC52FADF.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127637/files/figure.png	https://doi.org/10.5281/zenodo.15127637	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396667034FDDAFEB0FC52FADF.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988394/files/figure.png	https://doi.org/10.5281/zenodo.14988394	Fig. 9. Details of the conch surface of orthoconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage. B. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen GIT 878-53, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage.C. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Vormsi Regional Stage, view of the inner surface of the outer shell. Scale bars = 5 mm for all figures. All figures with apertural side of specimens directed upward.	Fig. 9. Details of the conch surface of orthoconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage. B. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen GIT 878-53, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage.C. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Vormsi Regional Stage, view of the inner surface of the outer shell. Scale bars = 5 mm for all figures. All figures with apertural side of specimens directed upward.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396657032FDBFFE07FACEFCF8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127637/files/figure.png	https://doi.org/10.5281/zenodo.15127637	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396627032FD46FCFBFC4DFA0E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127637/files/figure.png	https://doi.org/10.5281/zenodo.15127637	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396637030FDFDFC2DFCDBFD3E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988392/files/figure.png	https://doi.org/10.5281/zenodo.14988392	Fig. 7. Actinocerida Teichert, 1933 of the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras bekkeri Troedsson, 1926, specimen GIT 426-1120 from Kasari, Vormsi Regional Stage, dorsal view. B. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm for all figures, same scale in A–C.	Fig. 7. Actinocerida Teichert, 1933 of the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras bekkeri Troedsson, 1926, specimen GIT 426-1120 from Kasari, Vormsi Regional Stage, dorsal view. B. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm for all figures, same scale in A–C.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396637030FDFDFC2DFCDBFD3E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127637/files/figure.png	https://doi.org/10.5281/zenodo.15127637	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	Fig. 8(preceding page). Median sections of phragmocones of ActinoceridaTeichert, 1933 of the Vormsi– Pirgu regional stages, Estonia. A–B. Nybyoceras bekkeri Troedsson, 1926. A. Specimen GIT 426-1107 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 426-1120 from Kasari, Vormsi Regional Stage. C–D, G. Nybyoceras intermedium Teichert, 1930. C. Specimen GIT 426-573 from Paluküla quarry, Vormsi Regional Stage. D. Specimen TUG 939-50 from Kõrgessaare quarry, Hiiumaa Island, Vormsi Regional Stage. E. Ormoceras heckeri Teichert, 1930, specimen TUG 1680-19 from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Gorbormoceras vohilaidense gen. et sp. nov., holotype GIT 878-235, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. G. Specimen TUG 1745- 293 from Pahkla, Pirgu Regional Stage. H. Ormoceras sp., specimen TUG 1745-239 from Salu, Pirgu Regional Stage. Scale bars = 10 mm for all figures, same scale in A–C, and in D–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783966E703DFDDFFC28FAFCFDD1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988394/files/figure.png	https://doi.org/10.5281/zenodo.14988394	Fig. 9. Details of the conch surface of orthoconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage. B. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen GIT 878-53, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage.C. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Vormsi Regional Stage, view of the inner surface of the outer shell. Scale bars = 5 mm for all figures. All figures with apertural side of specimens directed upward.	Fig. 9. Details of the conch surface of orthoconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage. B. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen GIT 878-53, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage.C. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Vormsi Regional Stage, view of the inner surface of the outer shell. Scale bars = 5 mm for all figures. All figures with apertural side of specimens directed upward.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783966E703DFDDFFC28FAFCFDD1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127641/files/figure.png	https://doi.org/10.5281/zenodo.15127641	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783966E703DFDDFFC28FAFCFDD1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988400/files/figure.png	https://doi.org/10.5281/zenodo.14988400	Fig. 13. Annulated Orthocerida of the Vormsi–Pirgu regional stages, Estonia. A. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen TUG 939-81, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B, D. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. C. Striatocycloceras cf. hosholmense, specimen TUG 939- 20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. E. Striatocycloceras sp., specimen TUG 42-414, from Saaremõisa (Lyckholm), Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A, C–E.	Fig. 13. Annulated Orthocerida of the Vormsi–Pirgu regional stages, Estonia. A. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen TUG 939-81, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B, D. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. C. Striatocycloceras cf. hosholmense, specimen TUG 939- 20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. E. Striatocycloceras sp., specimen TUG 42-414, from Saaremõisa (Lyckholm), Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A, C–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783966D703BFDBDFDE2FE65FE8D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127641/files/figure.png	https://doi.org/10.5281/zenodo.15127641	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783966D703BFDBDFDE2FE65FE8D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988400/files/figure.png	https://doi.org/10.5281/zenodo.14988400	Fig. 13. Annulated Orthocerida of the Vormsi–Pirgu regional stages, Estonia. A. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen TUG 939-81, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B, D. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. C. Striatocycloceras cf. hosholmense, specimen TUG 939- 20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. E. Striatocycloceras sp., specimen TUG 42-414, from Saaremõisa (Lyckholm), Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A, C–E.	Fig. 13. Annulated Orthocerida of the Vormsi–Pirgu regional stages, Estonia. A. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen TUG 939-81, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B, D. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. C. Striatocycloceras cf. hosholmense, specimen TUG 939- 20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. E. Striatocycloceras sp., specimen TUG 42-414, from Saaremõisa (Lyckholm), Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A, C–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396687006FE2FF90EFB05FD9B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988394/files/figure.png	https://doi.org/10.5281/zenodo.14988394	Fig. 9. Details of the conch surface of orthoconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage. B. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen GIT 878-53, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage.C. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Vormsi Regional Stage, view of the inner surface of the outer shell. Scale bars = 5 mm for all figures. All figures with apertural side of specimens directed upward.	Fig. 9. Details of the conch surface of orthoconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Nybyoceras intermedium Teichert, 1930, specimen TUG 939-49, from Moe stratotype outcrop, Pirgu Regional Stage. B. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen GIT 878-53, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage.C. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Vormsi Regional Stage, view of the inner surface of the outer shell. Scale bars = 5 mm for all figures. All figures with apertural side of specimens directed upward.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396687006FE2FF90EFB05FD9B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988400/files/figure.png	https://doi.org/10.5281/zenodo.14988400	Fig. 13. Annulated Orthocerida of the Vormsi–Pirgu regional stages, Estonia. A. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen TUG 939-81, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B, D. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. C. Striatocycloceras cf. hosholmense, specimen TUG 939- 20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. E. Striatocycloceras sp., specimen TUG 42-414, from Saaremõisa (Lyckholm), Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A, C–E.	Fig. 13. Annulated Orthocerida of the Vormsi–Pirgu regional stages, Estonia. A. Palaeodawsonocerina senckenbergi (Teichert, 1930), specimen TUG 939-81, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B, D. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. C. Striatocycloceras cf. hosholmense, specimen TUG 939- 20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. E. Striatocycloceras sp., specimen TUG 42-414, from Saaremõisa (Lyckholm), Vormsi Regional Stage. Scale bars = 10 mm for all figures, same scale in A, C–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396687006FE2FF90EFB05FD9B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988404/files/figure.png	https://doi.org/10.5281/zenodo.14988404	Fig. 14. Diagrams of morphological variability of specimens of Palaeodawsonocerina senckenbergi (Teichert, 1930), Pirgu–Vormsi regional stages, Estonia. A. Angle of expansion. B. Absolute distance of annulation. C. Distance of annulation relative to conch diameter. Note the constant relative distance of annulation throughout growth.	Fig. 14. Diagrams of morphological variability of specimens of Palaeodawsonocerina senckenbergi (Teichert, 1930), Pirgu–Vormsi regional stages, Estonia. A. Angle of expansion. B. Absolute distance of annulation. C. Distance of annulation relative to conch diameter. Note the constant relative distance of annulation throughout growth.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396567007FD86FD1DFA9FFE69.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396577003FDC1FACBFAC2FBA3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988406/files/figure.png	https://doi.org/10.5281/zenodo.14988406	Fig. 15. Pseudorthoceratidae Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A–C. Ephippiorthoceras vormsiense sp. nov. from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Specimen GIT 878-192, lateral view. B–C. Specimen GIT 878-228. B. Lateral view. C. Ventral view. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878-41, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 10 mm in all figures, same scale in A–C.	Fig. 15. Pseudorthoceratidae Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A–C. Ephippiorthoceras vormsiense sp. nov. from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Specimen GIT 878-192, lateral view. B–C. Specimen GIT 878-228. B. Lateral view. C. Ventral view. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878-41, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 10 mm in all figures, same scale in A–C.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396577003FDC1FACBFAC2FBA3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131748/files/figure.png	https://doi.org/10.5281/zenodo.15131748	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839651700FFE5CFE42FBC4FB42.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127641/files/figure.png	https://doi.org/10.5281/zenodo.15127641	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839651700FFE5CFE42FBC4FB42.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839651700FFE5CFE42FBC4FB42.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988412/files/figure.png	https://doi.org/10.5281/zenodo.14988412	Fig. 18. Diagrams of morphological variability of specimens of Gorbyoceras Shimizu & Obata, 1935 from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. Note the low values (nearly mature specimens of G. sp. and G. stumburi Kröger 2013). B. Distance of annuli relative to corresponding conch height. A species distinction of specimens smaller ca 15–20 mm is not possible based on angle of expansion and relative chamber distance. Circles = G. textumaraneum (Roemer, 1861); filled circles = G. clathratoannulatum (Roemer, 1861) comb. nov.; stars = G. sp., and G. stumburi.	Fig. 18. Diagrams of morphological variability of specimens of Gorbyoceras Shimizu & Obata, 1935 from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. Note the low values (nearly mature specimens of G. sp. and G. stumburi Kröger 2013). B. Distance of annuli relative to corresponding conch height. A species distinction of specimens smaller ca 15–20 mm is not possible based on angle of expansion and relative chamber distance. Circles = G. textumaraneum (Roemer, 1861); filled circles = G. clathratoannulatum (Roemer, 1861) comb. nov.; stars = G. sp., and G. stumburi.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965F700CFDC8FB76FDC7FC0A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965C700AFDF9FBAEFBC5FDF6.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127641/files/figure.png	https://doi.org/10.5281/zenodo.15127641	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965C700AFDF9FBAEFBC5FDF6.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965C700AFDF9FBAEFBC5FDF6.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988412/files/figure.png	https://doi.org/10.5281/zenodo.14988412	Fig. 18. Diagrams of morphological variability of specimens of Gorbyoceras Shimizu & Obata, 1935 from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. Note the low values (nearly mature specimens of G. sp. and G. stumburi Kröger 2013). B. Distance of annuli relative to corresponding conch height. A species distinction of specimens smaller ca 15–20 mm is not possible based on angle of expansion and relative chamber distance. Circles = G. textumaraneum (Roemer, 1861); filled circles = G. clathratoannulatum (Roemer, 1861) comb. nov.; stars = G. sp., and G. stumburi.	Fig. 18. Diagrams of morphological variability of specimens of Gorbyoceras Shimizu & Obata, 1935 from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. Note the low values (nearly mature specimens of G. sp. and G. stumburi Kröger 2013). B. Distance of annuli relative to corresponding conch height. A species distinction of specimens smaller ca 15–20 mm is not possible based on angle of expansion and relative chamber distance. Circles = G. textumaraneum (Roemer, 1861); filled circles = G. clathratoannulatum (Roemer, 1861) comb. nov.; stars = G. sp., and G. stumburi.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965A700AFD5CFD81FD8FFB35.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965A7016FDF2F967FBC8FB1C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131885/files/figure.png	https://doi.org/10.5281/zenodo.15131885	Fig. 19 (next page). Median sections of phragmocones of Isorthoceras Flower, 1962 of the Vormsi– Pirgu regional stages, Estonia. A–C. Isorthoceras luhai (Stumbur, 1956) comb. nov. A. Specimen GIT 426-1108 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 838-30 from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Holotype TUG 939-1, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878- 20, from Saxby shore, Vormsi Island, Vormsi Regional Stage. E. Isorthoceras sp. E, GIT 426-1132, from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Isorthoceras luhai, specimen GIT 426- 1108, from Paluküla quarry, Vormsi Regional Stage. G. Isorthoceras saaremense, TUG 1745-305, from Kersleti old quarry, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 19 (next page). Median sections of phragmocones of Isorthoceras Flower, 1962 of the Vormsi– Pirgu regional stages, Estonia. A–C. Isorthoceras luhai (Stumbur, 1956) comb. nov. A. Specimen GIT 426-1108 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 838-30 from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Holotype TUG 939-1, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878- 20, from Saxby shore, Vormsi Island, Vormsi Regional Stage. E. Isorthoceras sp. E, GIT 426-1132, from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Isorthoceras luhai, specimen GIT 426- 1108, from Paluküla quarry, Vormsi Regional Stage. G. Isorthoceras saaremense, TUG 1745-305, from Kersleti old quarry, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965A7016FDF2F967FBC8FB1C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988414/files/figure.png	https://doi.org/10.5281/zenodo.14988414	Fig. 20. Diagrams of morphological variability of specimens of Isorthoceras luhai (Stumbur, 1956) comb. nov. and Isorthoceras saaremense (Balashov, 1959) comb. nov. from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. B. Relative chamber length. C. Relative siphuncle position. Explanation of symbols: circle =I. saaremense; filled circle = I. luhai; circle plus = types ofI. dalecarlense Kröger et al., 2011; diamonds = type of Hedstroemoceras saaremense Balashov, 1959; squares = type of Michelinoceras dnestrovense Balashov, 1975. Note the difference in siphuncle position between I. luhai and I. saaremense.	Fig. 20. Diagrams of morphological variability of specimens of Isorthoceras luhai (Stumbur, 1956) comb. nov. and Isorthoceras saaremense (Balashov, 1959) comb. nov. from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. B. Relative chamber length. C. Relative siphuncle position. Explanation of symbols: circle =I. saaremense; filled circle = I. luhai; circle plus = types ofI. dalecarlense Kröger et al., 2011; diamonds = type of Hedstroemoceras saaremense Balashov, 1959; squares = type of Michelinoceras dnestrovense Balashov, 1975. Note the difference in siphuncle position between I. luhai and I. saaremense.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783965A7016FDF2F967FBC8FB1C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988416/files/figure.png	https://doi.org/10.5281/zenodo.14988416	Fig. 21. Diagram of the variation in angle of expansion in specimens assigned to Isorthoceras dalecarlense Kröger et al. 2011, and Isorthoceras luhai (Stumbur, 1956) comb. nov. Abbreviations: Fm = Formation; Lst = Limestone. Explanation of symbols: black circles = I. luhai (herein); circle plus = types of I. dalecarlense in Kröger et al. 2011; stars = I. dalecarlense in Kröger 2013. Note the divergent angle of expansion in specimens assigned to I. dalecarlense in specimens <10 mm. See text for discussion.	Fig. 21. Diagram of the variation in angle of expansion in specimens assigned to Isorthoceras dalecarlense Kröger et al. 2011, and Isorthoceras luhai (Stumbur, 1956) comb. nov. Abbreviations: Fm = Formation; Lst = Limestone. Explanation of symbols: black circles = I. luhai (herein); circle plus = types of I. dalecarlense in Kröger et al. 2011; stars = I. dalecarlense in Kröger 2013. Note the divergent angle of expansion in specimens assigned to I. dalecarlense in specimens <10 mm. See text for discussion.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396467017FE27FA98FBF7F903.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988406/files/figure.png	https://doi.org/10.5281/zenodo.14988406	Fig. 15. Pseudorthoceratidae Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A–C. Ephippiorthoceras vormsiense sp. nov. from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Specimen GIT 878-192, lateral view. B–C. Specimen GIT 878-228. B. Lateral view. C. Ventral view. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878-41, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 10 mm in all figures, same scale in A–C.	Fig. 15. Pseudorthoceratidae Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A–C. Ephippiorthoceras vormsiense sp. nov. from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Specimen GIT 878-192, lateral view. B–C. Specimen GIT 878-228. B. Lateral view. C. Ventral view. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878-41, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 10 mm in all figures, same scale in A–C.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396467017FE27FA98FBF7F903.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131885/files/figure.png	https://doi.org/10.5281/zenodo.15131885	Fig. 19 (next page). Median sections of phragmocones of Isorthoceras Flower, 1962 of the Vormsi– Pirgu regional stages, Estonia. A–C. Isorthoceras luhai (Stumbur, 1956) comb. nov. A. Specimen GIT 426-1108 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 838-30 from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Holotype TUG 939-1, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878- 20, from Saxby shore, Vormsi Island, Vormsi Regional Stage. E. Isorthoceras sp. E, GIT 426-1132, from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Isorthoceras luhai, specimen GIT 426- 1108, from Paluküla quarry, Vormsi Regional Stage. G. Isorthoceras saaremense, TUG 1745-305, from Kersleti old quarry, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 19 (next page). Median sections of phragmocones of Isorthoceras Flower, 1962 of the Vormsi– Pirgu regional stages, Estonia. A–C. Isorthoceras luhai (Stumbur, 1956) comb. nov. A. Specimen GIT 426-1108 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 838-30 from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Holotype TUG 939-1, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878- 20, from Saxby shore, Vormsi Island, Vormsi Regional Stage. E. Isorthoceras sp. E, GIT 426-1132, from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Isorthoceras luhai, specimen GIT 426- 1108, from Paluküla quarry, Vormsi Regional Stage. G. Isorthoceras saaremense, TUG 1745-305, from Kersleti old quarry, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396467017FE27FA98FBF7F903.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988414/files/figure.png	https://doi.org/10.5281/zenodo.14988414	Fig. 20. Diagrams of morphological variability of specimens of Isorthoceras luhai (Stumbur, 1956) comb. nov. and Isorthoceras saaremense (Balashov, 1959) comb. nov. from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. B. Relative chamber length. C. Relative siphuncle position. Explanation of symbols: circle =I. saaremense; filled circle = I. luhai; circle plus = types ofI. dalecarlense Kröger et al., 2011; diamonds = type of Hedstroemoceras saaremense Balashov, 1959; squares = type of Michelinoceras dnestrovense Balashov, 1975. Note the difference in siphuncle position between I. luhai and I. saaremense.	Fig. 20. Diagrams of morphological variability of specimens of Isorthoceras luhai (Stumbur, 1956) comb. nov. and Isorthoceras saaremense (Balashov, 1959) comb. nov. from Vormsi–Pirgu regional stages, Estonia. A. Angle of expansion. B. Relative chamber length. C. Relative siphuncle position. Explanation of symbols: circle =I. saaremense; filled circle = I. luhai; circle plus = types ofI. dalecarlense Kröger et al., 2011; diamonds = type of Hedstroemoceras saaremense Balashov, 1959; squares = type of Michelinoceras dnestrovense Balashov, 1975. Note the difference in siphuncle position between I. luhai and I. saaremense.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396477014FD5DF8B4FBCEFD1B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396447014FD5CFC9DFCFEFA0A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396447015FD5CF9AEFABFFE33.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127643/files/figure.png	https://doi.org/10.5281/zenodo.15127643	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	Fig. 12 (next page). Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi– Pirgu regional stages, Estonia. A. Isorthoceras sp. A, specimen GIT 878-128, Sutlema quarry, Vormsi Regional Stage. B. Pleurorthoceras sp., specimen GIT 878-154, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov., specimen GIT 878-305, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D–E. Gorbyoceras textumaraneum (Roemer, 1861). D. Specimen GIT 878-143 from Vohilaid shore, Vohilaid Island, Pirgu Regional Stage. E. GIT 878-223, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Isorthoceras sp. C, specimen GIT 878-49, Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Isorthoceras sp. B, specimen GIT 878-116, from Moe trench, Vormsi Regional Stage. H. Gorbyoceras clathratoannulatum, specimen GIT 840-265, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. I. Isorthoceras sp. D, specimen GIT 878-114, Moe trench, Vormsi Regional Stage. J. Gorbyoceras stumburi (Kröger, 2013), specimen TUG 939-30, from Harilaid, Pirgu Regional Stage. K. Palaeodawsonocerina? sp., specimen TUG 939-78, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. L–M. Gorbyoceras textumaraneum. L. Specimen TUG 1745-193, from Mõnuste quarry, Vormsi Regional Stage, lateral view. M. Specimen GIT 878-306, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. N. Gorbyoceras sp. A, specimen TUG 42-417, from Kohila, Vormsi Regional Stage, lateral view. Scale bars = 10 mm in all figures. Same scale in A–B, F–G, I, N, and in C–E, H, J, L.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396457015FD5BFE43FC13FA19.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15127641/files/figure.png	https://doi.org/10.5281/zenodo.15127641	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	Fig. 11(preceding page). Median sections of phragmocones of Orthocerida Kuhn, 1940 and Pseudorthocerida Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A. Pleurorthoceras sp., specimen TUG 1745-31 from Mõnuste quarry, Vormsi Regional Stage. B–C. Gorbyoceras clathratoannulatum (Roemer, 1861) comb. nov. B. Specimen GIT 878-149, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. C. Specimen GIT 840-138, from Hosholm shore, Vormsi Island, Vormsi Regional Stage. D. Gorbyoceras textumaraneum (Roemer, 1861), specimen GIT 878-299 from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. E. Striatocycloceras hosholmense sp. nov., holotype GIT 878-297, from Hosholm shore, Vormsi Island, Pirgu Regional Stage.F. Striatocycloceras cf. hosholmense, specimen TUG 939-20, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. G. Striatocycloceras hosholmense, paratype GIT 878-312, from Hosholm shore, Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm for all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396457012FD5DF999FD93FE1B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131885/files/figure.png	https://doi.org/10.5281/zenodo.15131885	Fig. 19 (next page). Median sections of phragmocones of Isorthoceras Flower, 1962 of the Vormsi– Pirgu regional stages, Estonia. A–C. Isorthoceras luhai (Stumbur, 1956) comb. nov. A. Specimen GIT 426-1108 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 838-30 from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Holotype TUG 939-1, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878- 20, from Saxby shore, Vormsi Island, Vormsi Regional Stage. E. Isorthoceras sp. E, GIT 426-1132, from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Isorthoceras luhai, specimen GIT 426- 1108, from Paluküla quarry, Vormsi Regional Stage. G. Isorthoceras saaremense, TUG 1745-305, from Kersleti old quarry, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 19 (next page). Median sections of phragmocones of Isorthoceras Flower, 1962 of the Vormsi– Pirgu regional stages, Estonia. A–C. Isorthoceras luhai (Stumbur, 1956) comb. nov. A. Specimen GIT 426-1108 from Paluküla quarry, Vormsi Regional Stage. B. Specimen GIT 838-30 from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Holotype TUG 939-1, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878- 20, from Saxby shore, Vormsi Island, Vormsi Regional Stage. E. Isorthoceras sp. E, GIT 426-1132, from Saxby shore, Vormsi Island, Vormsi Regional Stage. F. Isorthoceras luhai, specimen GIT 426- 1108, from Paluküla quarry, Vormsi Regional Stage. G. Isorthoceras saaremense, TUG 1745-305, from Kersleti old quarry, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396427013FDC1FAD4FC1EF91D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988418/files/figure.png	https://doi.org/10.5281/zenodo.14988418	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396437011FD50F8A5FB27FC4C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988418/files/figure.png	https://doi.org/10.5281/zenodo.14988418	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396417011FD50FC68FD50F874.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988418/files/figure.png	https://doi.org/10.5281/zenodo.14988418	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964E701EFD53FEB0FB18FC36.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988418/files/figure.png	https://doi.org/10.5281/zenodo.14988418	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	Fig. 22.Charactoceras Foerste, 1924from thePirguRegional Stage, Estonia.A. Charactocerasestonicum Strand, 1934, specimen GIT 878-229, from Vohilaid shore (E), Vohilaid Island. B. Charactoceras? sp., specimen TUG 1006-13, from Paope quarry. C. Charactoceras sp. A, specimen GIT 878-215, from Hosholm shore (tower), Vormsi Island. D. Charactoceras sp. B, specimen GIT 878-222, from Hosholm shore (tower), Vormsi Island. E. Same specimen as in C, dorsal view. Scale bar = 10 mm, same scale in A–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964E701CFDC6F94AFC44FAC7.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988422/files/figure.png	https://doi.org/10.5281/zenodo.14988422	Fig. 23. Saxbyoceras kingpooli gen. et sp. nov., holotype GIT 878-25 of the Vormsi Regional Stage, from Saxby shore, Vormsi Island, Estonia. A. Lateral view. B. Median section of the phragmocone with details of the siphuncle and connecting ring. Scale bars: A = 20 mm; B = 5 mm.	Fig. 23. Saxbyoceras kingpooli gen. et sp. nov., holotype GIT 878-25 of the Vormsi Regional Stage, from Saxby shore, Vormsi Island, Estonia. A. Lateral view. B. Median section of the phragmocone with details of the siphuncle and connecting ring. Scale bars: A = 20 mm; B = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964D701DFD96FEB1FEEFFA93.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988424/files/figure.png	https://doi.org/10.5281/zenodo.14988424	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964D701BFD9EFA24FD00FAC7.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988424/files/figure.png	https://doi.org/10.5281/zenodo.14988424	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964B7066FE1BFAF2FB30FA13.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131748/files/figure.png	https://doi.org/10.5281/zenodo.15131748	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964B7066FE1BFAF2FB30FA13.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988428/files/figure.png	https://doi.org/10.5281/zenodo.14988428	Fig. 25. Diestoceratids from the Pirgu Regional Stage, Estonia. A–B. Dowlingoceras tornense sp. nov., paratype GIT 840-273, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Lateral view, prosiphuncular side left. B. View of the prosiphuncular side. C. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 878-263, from Hosholm shore (tower), Vormsi Island. Scale bar = 10 mm, same scale in all figures.	Fig. 25. Diestoceratids from the Pirgu Regional Stage, Estonia. A–B. Dowlingoceras tornense sp. nov., paratype GIT 840-273, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Lateral view, prosiphuncular side left. B. View of the prosiphuncular side. C. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 878-263, from Hosholm shore (tower), Vormsi Island. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964B7066FE1BFAF2FB30FA13.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988430/files/figure.png	https://doi.org/10.5281/zenodo.14988430	Fig. 26. Diagrams of the variation mature conch size in Danoceras piersalense (Teichert, 1930) comb. nov. A. Histogram of the frequency of conch heights at the base of the mature body chamber (note the bimodal distribution). B. Conch height and conch width at the base of the body chamber of mature specimens.	Fig. 26. Diagrams of the variation mature conch size in Danoceras piersalense (Teichert, 1930) comb. nov. A. Histogram of the frequency of conch heights at the base of the mature body chamber (note the bimodal distribution). B. Conch height and conch width at the base of the body chamber of mature specimens.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783964B7066FE1BFAF2FB30FA13.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988424/files/figure.png	https://doi.org/10.5281/zenodo.14988424	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396367067FDA8F9A6FEEBFBFC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988424/files/figure.png	https://doi.org/10.5281/zenodo.14988424	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 24. Danoceras Troedsson, 1926 from the Vormsi–Pirgu regional stages, Estonia. A. Danoceras oviforme sp. nov., holotype GIT 878-108, from Moe trench, Vormsi Regional Stage, lateral view. B. Danoceras breve Strand, 1934, holotype GIT 426-988, from Haapsalu holm, Haapsalu, Pirgu Regional Stage, lateral view. C. Danoceras oviforme sp. nov., specimen GIT 80-510, from Piirsalu quarry, Pirgu Regional Stage, lateral view prosiphuncular side toward right. D. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 840-271, from Hosholm shore (tower), Vormsi Island, lateral view. E. Danoceras vohilaidense sp. nov., holotype GIT 878-273, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view, prosiphuncular side left.F–H. Danoceras piersalense specimen GIT 840-93, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. F. Lateral view. G. Adapical view, prosiphuncular side to the right. H. Specimen TUG 1745-302, from Pirgu River outcrop, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396377067FD48FBF9FCB7F870.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396347065FDDDFD40FC11FB61.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396347065FDDDFD40FC11FB61.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988406/files/figure.png	https://doi.org/10.5281/zenodo.14988406	Fig. 15. Pseudorthoceratidae Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A–C. Ephippiorthoceras vormsiense sp. nov. from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Specimen GIT 878-192, lateral view. B–C. Specimen GIT 878-228. B. Lateral view. C. Ventral view. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878-41, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 10 mm in all figures, same scale in A–C.	Fig. 15. Pseudorthoceratidae Flower & Caster, 1935 of the Vormsi–Pirgu regional stages, Estonia. A–C. Ephippiorthoceras vormsiense sp. nov. from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Specimen GIT 878-192, lateral view. B–C. Specimen GIT 878-228. B. Lateral view. C. Ventral view. D. Isorthoceras saaremense (Balashov, 1959) comb. nov., specimen GIT 878-41, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 10 mm in all figures, same scale in A–C.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396357063FD43FB12FC37FC85.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396337060FDDBF991FD57FB6B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131748/files/figure.png	https://doi.org/10.5281/zenodo.15131748	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396337060FDDBF991FD57FB6B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396307061FDA7FB0DFB8CFC2E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988428/files/figure.png	https://doi.org/10.5281/zenodo.14988428	Fig. 25. Diestoceratids from the Pirgu Regional Stage, Estonia. A–B. Dowlingoceras tornense sp. nov., paratype GIT 840-273, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Lateral view, prosiphuncular side left. B. View of the prosiphuncular side. C. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 878-263, from Hosholm shore (tower), Vormsi Island. Scale bar = 10 mm, same scale in all figures.	Fig. 25. Diestoceratids from the Pirgu Regional Stage, Estonia. A–B. Dowlingoceras tornense sp. nov., paratype GIT 840-273, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. Lateral view, prosiphuncular side left. B. View of the prosiphuncular side. C. Danoceras piersalense (Teichert, 1930) comb. nov., specimen GIT 878-263, from Hosholm shore (tower), Vormsi Island. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396307061FDA7FB0DFB8CFC2E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396317061FD6EFC48FDACF97D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839631706EFD6DF905FBA8FCA5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783963E706EFDA5FCDEFC99F958.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783963F706DFDC9FD5DFB6CFE72.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988432/files/figure.png	https://doi.org/10.5281/zenodo.14988432	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783963F706DFDC9FD5DFB6CFE72.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988434/files/figure.png	https://doi.org/10.5281/zenodo.14988434	Fig. 29. Median sections of phragmocones of Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Hiiumoceras hiiuense gen et sp. nov., holotype TUG 1745-11, from Paope quarry, Hiiumaa Island, Vormsi Regional Stage. B. Rizosceras teres sp. nov., paratype TUG 80-508, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage. D. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-248, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm.	Fig. 29. Median sections of phragmocones of Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Hiiumoceras hiiuense gen et sp. nov., holotype TUG 1745-11, from Paope quarry, Hiiumaa Island, Vormsi Regional Stage. B. Rizosceras teres sp. nov., paratype TUG 80-508, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage. D. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-248, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396397069FDBCFED2FCF3FA8D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988434/files/figure.png	https://doi.org/10.5281/zenodo.14988434	Fig. 29. Median sections of phragmocones of Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Hiiumoceras hiiuense gen et sp. nov., holotype TUG 1745-11, from Paope quarry, Hiiumaa Island, Vormsi Regional Stage. B. Rizosceras teres sp. nov., paratype TUG 80-508, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage. D. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-248, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm.	Fig. 29. Median sections of phragmocones of Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Hiiumoceras hiiuense gen et sp. nov., holotype TUG 1745-11, from Paope quarry, Hiiumaa Island, Vormsi Regional Stage. B. Rizosceras teres sp. nov., paratype TUG 80-508, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage. D. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-248, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396397069FDBCFED2FCF3FA8D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988436/files/figure.png	https://doi.org/10.5281/zenodo.14988436	Fig. 30. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56 from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Rizosceras teres sp. nov., paratype GIT 426-550, from Kõrgessaare quarry, Vormsi Regional Stage, lateral view. C. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage, lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 30. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56 from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Rizosceras teres sp. nov., paratype GIT 426-550, from Kõrgessaare quarry, Vormsi Regional Stage, lateral view. C. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage, lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396397077FDF6FA35FDCBFDD5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988442/files/figure.png	https://doi.org/10.5281/zenodo.14988442	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396397077FDF6FA35FDCBFDD5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988444/files/figure.png	https://doi.org/10.5281/zenodo.14988444	Fig. 33. Diagrams of morphological variability of specimens of Beloitoceras sinuososeptatum (Roemer, 1861). A. Angle of expansion. B. Conch width index (CHI). Explanation of symbols: White circles = B. sinuososeptatum Estonian specimens, Vormsi–Pirgu regional stages (herein); black circles = B. sinuososeptatum Boda Limestone, Sweden (Kröger 2013); star = type B. sinuososeptatum in Dzik (1984); cross = types B. sinuososeptatum in Strand (1934); triangle = B. cf. sinuososeptatum (herein). See text for discussion.	Fig. 33. Diagrams of morphological variability of specimens of Beloitoceras sinuososeptatum (Roemer, 1861). A. Angle of expansion. B. Conch width index (CHI). Explanation of symbols: White circles = B. sinuososeptatum Estonian specimens, Vormsi–Pirgu regional stages (herein); black circles = B. sinuososeptatum Boda Limestone, Sweden (Kröger 2013); star = type B. sinuososeptatum in Dzik (1984); cross = types B. sinuososeptatum in Strand (1934); triangle = B. cf. sinuososeptatum (herein). See text for discussion.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396277074FDF0FDEDFBF3FE76.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15131748/files/figure.png	https://doi.org/10.5281/zenodo.15131748	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	Fig. 16 (next page). Median sections of phragmocone of cephalopods of the Pirgu Regional Stage, Estonia. A–B. Ephippiorthoceras vormsiense sp. nov. A. Holotype (GIT 878-192), from Hosholm shore (tower), Vormsi Island. B. Specimen TUG 1745-28, from Vohilaid shore (E), Vohilaid Island. C–D. Danoceras piersalense (Teichert, 1930) comb. nov. C. Specimen TUG 80-510, from Piirsalu quarry. D. Specimen TUG 1745-296, from Pirgu River outcrop. E. Dowlingoceras kallholnense Frye, 1987, from GIT 878- 247, from Hosholm shore, Vormsi Island. F. Danoceras piersalense specimen GIT 840-271, from Hosholm shore, Vormsi Island. G. Beloitoceras cf. sinuoseptatum (Roemer, 1861), specimen GIT 426-2 from Hosholm shore, Vormsi Island. Scale bars = 5 mm in all figures, same scale in A–G.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396277074FDF0FDEDFBF3FE76.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988442/files/figure.png	https://doi.org/10.5281/zenodo.14988442	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396247074FDBCFE00FABEF93D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988432/files/figure.png	https://doi.org/10.5281/zenodo.14988432	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396247075FD56F944FCA2FCD8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988432/files/figure.png	https://doi.org/10.5281/zenodo.14988432	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396257072FDA9FAB5FE2CFD42.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988442/files/figure.png	https://doi.org/10.5281/zenodo.14988442	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396227072FD51FD76FE5BF967.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988442/files/figure.png	https://doi.org/10.5281/zenodo.14988442	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396237073FDB3FE33FC94F8E2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988446/files/figure.png	https://doi.org/10.5281/zenodo.14988446	Fig. 34. Dalecarlioceras Frye, 1987 of the Vormsi–Pirgu regional stages, Estonia. A–B. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-251, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C. Dalecarlioceras sp., specimen GIT 878-250, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. D–F. Dalecarlioceras bodense Frye, 1987, specimen TUG 1745-213, from Saaremõisa (Lyckholm), Vormsi Regional Stage. D. Adapical view. E. Lateral view. F. View of the antisiphuncular side. Scale bar = 20 mm in all figures, same scale in A–C, and in D–F.	Fig. 34. Dalecarlioceras Frye, 1987 of the Vormsi–Pirgu regional stages, Estonia. A–B. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-251, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C. Dalecarlioceras sp., specimen GIT 878-250, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. D–F. Dalecarlioceras bodense Frye, 1987, specimen TUG 1745-213, from Saaremõisa (Lyckholm), Vormsi Regional Stage. D. Adapical view. E. Lateral view. F. View of the antisiphuncular side. Scale bar = 20 mm in all figures, same scale in A–C, and in D–F.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396237071FDDCF894FEE6FADC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988434/files/figure.png	https://doi.org/10.5281/zenodo.14988434	Fig. 29. Median sections of phragmocones of Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Hiiumoceras hiiuense gen et sp. nov., holotype TUG 1745-11, from Paope quarry, Hiiumaa Island, Vormsi Regional Stage. B. Rizosceras teres sp. nov., paratype TUG 80-508, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage. D. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-248, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm.	Fig. 29. Median sections of phragmocones of Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Hiiumoceras hiiuense gen et sp. nov., holotype TUG 1745-11, from Paope quarry, Hiiumaa Island, Vormsi Regional Stage. B. Rizosceras teres sp. nov., paratype TUG 80-508, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage. D. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-248, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bars = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396237071FDDCF894FEE6FADC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988446/files/figure.png	https://doi.org/10.5281/zenodo.14988446	Fig. 34. Dalecarlioceras Frye, 1987 of the Vormsi–Pirgu regional stages, Estonia. A–B. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-251, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C. Dalecarlioceras sp., specimen GIT 878-250, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. D–F. Dalecarlioceras bodense Frye, 1987, specimen TUG 1745-213, from Saaremõisa (Lyckholm), Vormsi Regional Stage. D. Adapical view. E. Lateral view. F. View of the antisiphuncular side. Scale bar = 20 mm in all figures, same scale in A–C, and in D–F.	Fig. 34. Dalecarlioceras Frye, 1987 of the Vormsi–Pirgu regional stages, Estonia. A–B. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-251, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C. Dalecarlioceras sp., specimen GIT 878-250, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. D–F. Dalecarlioceras bodense Frye, 1987, specimen TUG 1745-213, from Saaremõisa (Lyckholm), Vormsi Regional Stage. D. Adapical view. E. Lateral view. F. View of the antisiphuncular side. Scale bar = 20 mm in all figures, same scale in A–C, and in D–F.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783962E707DFE3AFCD4FBCFFC98.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133475/files/figure.png	https://doi.org/10.5281/zenodo.15133475	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783962D707AFD78FAA3FDAFF9D3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133444/files/figure.png	https://doi.org/10.5281/zenodo.15133444	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	Fig. 27 (next page). Breviconic cephalopods from the Vormsi–Pirgu regional stages, Estonia. A. Dowlingoceras kallholnense Frye, 1987, specimen GIT 878-247, from Hosholm shore (tower),Vormsi Island, Pirgu Regional Stage, lateral view. B–C, E. Dowlingoceras sp., specimen GIT 878-249, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. B. Lateral view. C. View of antisiphuncular side. D. Danoceras sp. A., specimen GIT 878-269, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view.E. Adoral view. F. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, lateral view. G–H. Kallholnoceras sp. G. GIT 878- 323, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. H. Specimen GIT 878-233, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. I. Dowlingoceras tornense sp. nov., holotype GIT 840-254, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. J. Dowlingoceras sp. B, specimen GIT 47-866, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. K. Diestoceras sp., specimen GIT 878-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. L. Diestoceras stensioei (Troedsson, 1926), specimen GIT 426-987, from Piirsalu quarry, Pirgu Regional Stage. M. Diestoceratidae gen. et sp. indet., specimen TUG 1745-192, from Salu, Pirgu Regional Stage, view from antisiphuncular (?) side. N. Diestoceras stensioei (Troedsson, 1926), specimen GIT 840-264, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. Scale bar = 10 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783962D707AFD78FAA3FDAFF9D3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988436/files/figure.png	https://doi.org/10.5281/zenodo.14988436	Fig. 30. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56 from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Rizosceras teres sp. nov., paratype GIT 426-550, from Kõrgessaare quarry, Vormsi Regional Stage, lateral view. C. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage, lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 30. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56 from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Rizosceras teres sp. nov., paratype GIT 426-550, from Kõrgessaare quarry, Vormsi Regional Stage, lateral view. C. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage, lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783962B7079FDAEFC33FE41FEA1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988448/files/figure.png	https://doi.org/10.5281/zenodo.14988448	Fig. 36. Ascoceratidae Barrande, 1867 and Uranoceratidae Hyatt, 1900 of the Vormsi–Pirgu regional stages, Estonia. A. Deckeroceras balticum sp. nov., holotype GIT 878-227, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. B–C. Redpathoceras saxbyense sp. nov., holotype GIT 426-346, Saxby shore (N),Vormsi Island, Vormsi Regional Stage.B. View of the prosiphuncular side. C. Lateral view. D. Schuchertoceras deformis (Eichwald, 1860), specimen GIT 878-191, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, oblique lateral view. E. Redpathoceras saxbyense sp. nov., paratype GIT 76-97, from Moe stratotype outcrop, Pirgu Regional Stage.F–G. Schuchertoceras deformis (Eichwald, 1860), specimen TUG 2-734, Uuemõisa, Läänemaa, Pirgu Regional Stage. F. View of the antisiphuncular side. G. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 36. Ascoceratidae Barrande, 1867 and Uranoceratidae Hyatt, 1900 of the Vormsi–Pirgu regional stages, Estonia. A. Deckeroceras balticum sp. nov., holotype GIT 878-227, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. B–C. Redpathoceras saxbyense sp. nov., holotype GIT 426-346, Saxby shore (N),Vormsi Island, Vormsi Regional Stage.B. View of the prosiphuncular side. C. Lateral view. D. Schuchertoceras deformis (Eichwald, 1860), specimen GIT 878-191, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, oblique lateral view. E. Redpathoceras saxbyense sp. nov., paratype GIT 76-97, from Moe stratotype outcrop, Pirgu Regional Stage.F–G. Schuchertoceras deformis (Eichwald, 1860), specimen TUG 2-734, Uuemõisa, Läänemaa, Pirgu Regional Stage. F. View of the antisiphuncular side. G. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396297046FE3EFC80FBF4FA62.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988448/files/figure.png	https://doi.org/10.5281/zenodo.14988448	Fig. 36. Ascoceratidae Barrande, 1867 and Uranoceratidae Hyatt, 1900 of the Vormsi–Pirgu regional stages, Estonia. A. Deckeroceras balticum sp. nov., holotype GIT 878-227, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. B–C. Redpathoceras saxbyense sp. nov., holotype GIT 426-346, Saxby shore (N),Vormsi Island, Vormsi Regional Stage.B. View of the prosiphuncular side. C. Lateral view. D. Schuchertoceras deformis (Eichwald, 1860), specimen GIT 878-191, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, oblique lateral view. E. Redpathoceras saxbyense sp. nov., paratype GIT 76-97, from Moe stratotype outcrop, Pirgu Regional Stage.F–G. Schuchertoceras deformis (Eichwald, 1860), specimen TUG 2-734, Uuemõisa, Läänemaa, Pirgu Regional Stage. F. View of the antisiphuncular side. G. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 36. Ascoceratidae Barrande, 1867 and Uranoceratidae Hyatt, 1900 of the Vormsi–Pirgu regional stages, Estonia. A. Deckeroceras balticum sp. nov., holotype GIT 878-227, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. B–C. Redpathoceras saxbyense sp. nov., holotype GIT 426-346, Saxby shore (N),Vormsi Island, Vormsi Regional Stage.B. View of the prosiphuncular side. C. Lateral view. D. Schuchertoceras deformis (Eichwald, 1860), specimen GIT 878-191, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, oblique lateral view. E. Redpathoceras saxbyense sp. nov., paratype GIT 76-97, from Moe stratotype outcrop, Pirgu Regional Stage.F–G. Schuchertoceras deformis (Eichwald, 1860), specimen TUG 2-734, Uuemõisa, Läänemaa, Pirgu Regional Stage. F. View of the antisiphuncular side. G. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396297046FE3EFC80FBF4FA62.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396177045FDBFFEB0FD20FB9F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988448/files/figure.png	https://doi.org/10.5281/zenodo.14988448	Fig. 36. Ascoceratidae Barrande, 1867 and Uranoceratidae Hyatt, 1900 of the Vormsi–Pirgu regional stages, Estonia. A. Deckeroceras balticum sp. nov., holotype GIT 878-227, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. B–C. Redpathoceras saxbyense sp. nov., holotype GIT 426-346, Saxby shore (N),Vormsi Island, Vormsi Regional Stage.B. View of the prosiphuncular side. C. Lateral view. D. Schuchertoceras deformis (Eichwald, 1860), specimen GIT 878-191, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, oblique lateral view. E. Redpathoceras saxbyense sp. nov., paratype GIT 76-97, from Moe stratotype outcrop, Pirgu Regional Stage.F–G. Schuchertoceras deformis (Eichwald, 1860), specimen TUG 2-734, Uuemõisa, Läänemaa, Pirgu Regional Stage. F. View of the antisiphuncular side. G. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 36. Ascoceratidae Barrande, 1867 and Uranoceratidae Hyatt, 1900 of the Vormsi–Pirgu regional stages, Estonia. A. Deckeroceras balticum sp. nov., holotype GIT 878-227, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. B–C. Redpathoceras saxbyense sp. nov., holotype GIT 426-346, Saxby shore (N),Vormsi Island, Vormsi Regional Stage.B. View of the prosiphuncular side. C. Lateral view. D. Schuchertoceras deformis (Eichwald, 1860), specimen GIT 878-191, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, oblique lateral view. E. Redpathoceras saxbyense sp. nov., paratype GIT 76-97, from Moe stratotype outcrop, Pirgu Regional Stage.F–G. Schuchertoceras deformis (Eichwald, 1860), specimen TUG 2-734, Uuemõisa, Läänemaa, Pirgu Regional Stage. F. View of the antisiphuncular side. G. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396177045FDBFFEB0FD20FB9F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396177045FDBFFEB0FD20FB9F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988436/files/figure.png	https://doi.org/10.5281/zenodo.14988436	Fig. 30. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56 from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Rizosceras teres sp. nov., paratype GIT 426-550, from Kõrgessaare quarry, Vormsi Regional Stage, lateral view. C. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage, lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 30. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A. Beloitoceras siljanense Frye, 1987, specimen TUG 939-56 from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Rizosceras teres sp. nov., paratype GIT 426-550, from Kõrgessaare quarry, Vormsi Regional Stage, lateral view. C. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage, lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396127043FDFEFEB0FDE3FAC9.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396127043FDFEFEB0FDE3FAC9.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988452/files/figure.png	https://doi.org/10.5281/zenodo.14988452	Fig. 38. Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-226, from Hosholm shore (tower), Pirgu Regional Stage. A. Lateral view. B. View of antisiphuncular side. C–D. Cyrtogomphoceras troedssoni Teichert, 1930, from Kõrgessaare quarry, Hiiumaa Island, Estonia, Vormsi Regional Stage. C. Specimen TUG 939-60, lateral view. Note the cutout of the prosiphuncular side. D. Specimen GIT 426-392-1, lateral view. Scale bars = 20 mm in all figures, same scale in A–B, and in C–D.	Fig. 38. Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-226, from Hosholm shore (tower), Pirgu Regional Stage. A. Lateral view. B. View of antisiphuncular side. C–D. Cyrtogomphoceras troedssoni Teichert, 1930, from Kõrgessaare quarry, Hiiumaa Island, Estonia, Vormsi Regional Stage. C. Specimen TUG 939-60, lateral view. Note the cutout of the prosiphuncular side. D. Specimen GIT 426-392-1, lateral view. Scale bars = 20 mm in all figures, same scale in A–B, and in C–D.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839610704EFDC9FD9CFC76FE1F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839610704EFDC9FD9CFC76FE1F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988458/files/figure.png	https://doi.org/10.5281/zenodo.14988458	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961E704EFDFCFD98FBF6F83E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988458/files/figure.png	https://doi.org/10.5281/zenodo.14988458	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961F704FFDA9FEB1FDCCF859.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988446/files/figure.png	https://doi.org/10.5281/zenodo.14988446	Fig. 34. Dalecarlioceras Frye, 1987 of the Vormsi–Pirgu regional stages, Estonia. A–B. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-251, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C. Dalecarlioceras sp., specimen GIT 878-250, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. D–F. Dalecarlioceras bodense Frye, 1987, specimen TUG 1745-213, from Saaremõisa (Lyckholm), Vormsi Regional Stage. D. Adapical view. E. Lateral view. F. View of the antisiphuncular side. Scale bar = 20 mm in all figures, same scale in A–C, and in D–F.	Fig. 34. Dalecarlioceras Frye, 1987 of the Vormsi–Pirgu regional stages, Estonia. A–B. Dalecarlioceras constrictum Frye, 1987, specimen GIT 878-251, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C. Dalecarlioceras sp., specimen GIT 878-250, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage, lateral view. D–F. Dalecarlioceras bodense Frye, 1987, specimen TUG 1745-213, from Saaremõisa (Lyckholm), Vormsi Regional Stage. D. Adapical view. E. Lateral view. F. View of the antisiphuncular side. Scale bar = 20 mm in all figures, same scale in A–C, and in D–F.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961C704DFD9DFEB1FC4AFBBC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961C704DFD9DFEB1FC4AFBBC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988460/files/figure.png	https://doi.org/10.5281/zenodo.14988460	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961D704AFDB8FB38FEA3FB7E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133475/files/figure.png	https://doi.org/10.5281/zenodo.15133475	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961D704AFDB8FB38FEA3FB7E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961A704AFD96FB7AFB22F837.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133475/files/figure.png	https://doi.org/10.5281/zenodo.15133475	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961B704BFD9DFEB1FB6FF8BC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988438/files/figure.png	https://doi.org/10.5281/zenodo.14988438	Fig. 31. Details of shell ornamentation of cephalopods of the Vormsi–Pirgu regional stages, Estonia. A. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage. B. Kiaeroceras urgense sp. nov. holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. C–D. Strandoceras sphynx (Schmidt, 1858). C. Specimen TAM G432:68, from Niibi hillock, Pirgu Regional Stage. D. Specimen TUG 1672-29, from Saxby village, Pirgu Regional Stage. E. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Regional Stage. Scale bar = 5 mm in all figures, same scale in A–B, and in C–E.	Fig. 31. Details of shell ornamentation of cephalopods of the Vormsi–Pirgu regional stages, Estonia. A. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage. B. Kiaeroceras urgense sp. nov. holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. C–D. Strandoceras sphynx (Schmidt, 1858). C. Specimen TAM G432:68, from Niibi hillock, Pirgu Regional Stage. D. Specimen TUG 1672-29, from Saxby village, Pirgu Regional Stage. E. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Regional Stage. Scale bar = 5 mm in all figures, same scale in A–B, and in C–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783961B704BFD9DFEB1FB6FF8BC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133475/files/figure.png	https://doi.org/10.5281/zenodo.15133475	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396187048FD40FEB1FDE5FBD1.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988460/files/figure.png	https://doi.org/10.5281/zenodo.14988460	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396187048FD5FFBE3FB8EF8E7.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133475/files/figure.png	https://doi.org/10.5281/zenodo.15133475	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396187049FD5FF891FE60FD5D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133475/files/figure.png	https://doi.org/10.5281/zenodo.15133475	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 35 (preceding page). Oncoceratidae Hyatt, 1884 and Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Kiaeroceras sp. B, specimen GIT 878-161, from Saxby shore, Vormsi Island, Vormsi Regional Stage. A. View of the prosiphuncular side. B. Lateral view. C–D. Richardsonoceras priscum (Eichwald, 1860) comb. nov. from Kõrgessaare quarry, Hiiuma Island, Vormsi Regional Stage. C. Specimen GIT 426-608, lateral view. D. Specimen GIT 426-607, view of the prosiphuncular side. E, G. Kiaeroceras sp. C, specimen GIT 225-997, from Niibi hillock, Pirgu Regional Stage. E. Lateral view. G. Adapical view. F, H. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Adapical view. H. Lateral view. I. Kiaeroceras urgense sp. nov., holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. J. Kiaeroceras (?) cf. ormsoense, specimen TUG 1680-20, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396197049FD5FFD67FAE4FB1F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988460/files/figure.png	https://doi.org/10.5281/zenodo.14988460	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396197056FD40FA98FD7FFE8C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396197056FD40FA98FD7FFE8C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988460/files/figure.png	https://doi.org/10.5281/zenodo.14988460	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	Fig. 40. Kiaeroceras Strand, 1934 of the Vormsi Regional Stage, Estonia. A, D. Kiaeroceras sp. A, specimen TUG 895-69, from Kõrgessare, Hiiumaa Island, lateral view.B, E. Kiaeroceras sp. D, specimen TUG 1745-201, from Kärdla quarry, lateral view. C, G. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore. D. View of the prosiphuncular side. E. Adapical view. F. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island. G. Adapical view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396067054FDD9FA95FD2EFE12.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15133477/files/figure.png	https://doi.org/10.5281/zenodo.15133477	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	Fig. 37 (next page). Median sections of phragmocones of Multiceratoidea Mutvei, 2013 of the Vormsi– Pirgu regional stages, Estonia. A. Kiaeroceras sp. E, specimen GIT 878-21 from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. B. Cyrtogomphoceras troedssoni Teichert, 1930, specimen TUG 939-60, from Kõrgessare, Hiiumaa Island, Vormsi Regional Stage (section is approximate median only). C. Hosholmoceras ovalis gen. et sp. nov., holotype GIT 840-252, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage (section is approximate median only). D. Kiaeroceras (?) ormsoense sp. nov., holotype GIT 878-63, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. E. Redpathoceras saxbyense sp. nov., specimen GIT 878-156, from Saxby shore (N), Vormsi Island, Vormsi Regional Stage. F. Kiaeroceras kaebliki sp. nov., paratype GIT 426-1123, from Saxby shore, Vormsi Island, Vormsi Regional Stage. G. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-187, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. H. Kiaeroceras kaebliki sp. nov., holotype GIT 878-31, Saxby shore (N), Vormsi Island, Vormsi Regional Stage. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396067054FDD9FA95FD2EFE12.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988458/files/figure.png	https://doi.org/10.5281/zenodo.14988458	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396067054FDD9FA95FD2EFE12.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988452/files/figure.png	https://doi.org/10.5281/zenodo.14988452	Fig. 38. Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-226, from Hosholm shore (tower), Pirgu Regional Stage. A. Lateral view. B. View of antisiphuncular side. C–D. Cyrtogomphoceras troedssoni Teichert, 1930, from Kõrgessaare quarry, Hiiumaa Island, Estonia, Vormsi Regional Stage. C. Specimen TUG 939-60, lateral view. Note the cutout of the prosiphuncular side. D. Specimen GIT 426-392-1, lateral view. Scale bars = 20 mm in all figures, same scale in A–B, and in C–D.	Fig. 38. Cyrtogomphoceratidae Flower, 1940 of the Vormsi–Pirgu regional stages, Estonia. A–B. Lyckholmoceras norvegiae Strand, 1934, specimen GIT 878-226, from Hosholm shore (tower), Pirgu Regional Stage. A. Lateral view. B. View of antisiphuncular side. C–D. Cyrtogomphoceras troedssoni Teichert, 1930, from Kõrgessaare quarry, Hiiumaa Island, Estonia, Vormsi Regional Stage. C. Specimen TUG 939-60, lateral view. Note the cutout of the prosiphuncular side. D. Specimen GIT 426-392-1, lateral view. Scale bars = 20 mm in all figures, same scale in A–B, and in C–D.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396047052FDC8FC56FE66F953.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988438/files/figure.png	https://doi.org/10.5281/zenodo.14988438	Fig. 31. Details of shell ornamentation of cephalopods of the Vormsi–Pirgu regional stages, Estonia. A. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage. B. Kiaeroceras urgense sp. nov. holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. C–D. Strandoceras sphynx (Schmidt, 1858). C. Specimen TAM G432:68, from Niibi hillock, Pirgu Regional Stage. D. Specimen TUG 1672-29, from Saxby village, Pirgu Regional Stage. E. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Regional Stage. Scale bar = 5 mm in all figures, same scale in A–B, and in C–E.	Fig. 31. Details of shell ornamentation of cephalopods of the Vormsi–Pirgu regional stages, Estonia. A. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage. B. Kiaeroceras urgense sp. nov. holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. C–D. Strandoceras sphynx (Schmidt, 1858). C. Specimen TAM G432:68, from Niibi hillock, Pirgu Regional Stage. D. Specimen TUG 1672-29, from Saxby village, Pirgu Regional Stage. E. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Regional Stage. Scale bar = 5 mm in all figures, same scale in A–B, and in C–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396047052FDC8FC56FE66F953.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988462/files/figure.png	https://doi.org/10.5281/zenodo.14988462	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396047052FDC8FC56FE66F953.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988464/files/figure.png	https://doi.org/10.5281/zenodo.14988464	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396027050FDA1F964FD48FCB7.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988462/files/figure.png	https://doi.org/10.5281/zenodo.14988462	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396027050FDA1F964FD48FCB7.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988464/files/figure.png	https://doi.org/10.5281/zenodo.14988464	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839600705EFDACFCC1FE0BFEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988468/files/figure.png	https://doi.org/10.5281/zenodo.14988468	Fig. 43. Fragments of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. Strandoceras schmidti (Teichert, 1930), specimen TUG 1745-25, from Salu, Pirgu Regional Stage. C. Strandoceras kohilense sp. nov., holotype TUG 47-883, from Kohila quarry, Vormsi Regional Stage. Scale = 20 mm, same scale in all figures, all in lateral view.	Fig. 43. Fragments of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. Strandoceras schmidti (Teichert, 1930), specimen TUG 1745-25, from Salu, Pirgu Regional Stage. C. Strandoceras kohilense sp. nov., holotype TUG 47-883, from Kohila quarry, Vormsi Regional Stage. Scale = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
932687839600705EFDACFCC1FE0BFEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988470/files/figure.png	https://doi.org/10.5281/zenodo.14988470	Fig. 44. Median sections of phragmocones of Strandoceras Flower, 1946, from Saxby shore, Vormsi Island, Vormsi Regional Stage, Estonia. A. Strandoceras muhvi sp. nov., paratype TUG 939-58. B. Strandoceras kohilense sp. nov., paratype GIT 878-79. Scale bars = 5 mm.	Fig. 44. Median sections of phragmocones of Strandoceras Flower, 1946, from Saxby shore, Vormsi Island, Vormsi Regional Stage, Estonia. A. Strandoceras muhvi sp. nov., paratype TUG 939-58. B. Strandoceras kohilense sp. nov., paratype GIT 878-79. Scale bars = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960E705FFD9FFED5FA8AFB99.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988462/files/figure.png	https://doi.org/10.5281/zenodo.14988462	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960E705FFD9FFED5FA8AFB99.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988464/files/figure.png	https://doi.org/10.5281/zenodo.14988464	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960E705FFD9FFED5FA8AFB99.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988470/files/figure.png	https://doi.org/10.5281/zenodo.14988470	Fig. 44. Median sections of phragmocones of Strandoceras Flower, 1946, from Saxby shore, Vormsi Island, Vormsi Regional Stage, Estonia. A. Strandoceras muhvi sp. nov., paratype TUG 939-58. B. Strandoceras kohilense sp. nov., paratype GIT 878-79. Scale bars = 5 mm.	Fig. 44. Median sections of phragmocones of Strandoceras Flower, 1946, from Saxby shore, Vormsi Island, Vormsi Regional Stage, Estonia. A. Strandoceras muhvi sp. nov., paratype TUG 939-58. B. Strandoceras kohilense sp. nov., paratype GIT 878-79. Scale bars = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960F705CFDC1FB1BFAFCFB27.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988464/files/figure.png	https://doi.org/10.5281/zenodo.14988464	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960F705CFDC1FB1BFAFCFB27.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988468/files/figure.png	https://doi.org/10.5281/zenodo.14988468	Fig. 43. Fragments of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. Strandoceras schmidti (Teichert, 1930), specimen TUG 1745-25, from Salu, Pirgu Regional Stage. C. Strandoceras kohilense sp. nov., holotype TUG 47-883, from Kohila quarry, Vormsi Regional Stage. Scale = 20 mm, same scale in all figures, all in lateral view.	Fig. 43. Fragments of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. Strandoceras schmidti (Teichert, 1930), specimen TUG 1745-25, from Salu, Pirgu Regional Stage. C. Strandoceras kohilense sp. nov., holotype TUG 47-883, from Kohila quarry, Vormsi Regional Stage. Scale = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960C705DFDA2FB51FE4BF943.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988438/files/figure.png	https://doi.org/10.5281/zenodo.14988438	Fig. 31. Details of shell ornamentation of cephalopods of the Vormsi–Pirgu regional stages, Estonia. A. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage. B. Kiaeroceras urgense sp. nov. holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. C–D. Strandoceras sphynx (Schmidt, 1858). C. Specimen TAM G432:68, from Niibi hillock, Pirgu Regional Stage. D. Specimen TUG 1672-29, from Saxby village, Pirgu Regional Stage. E. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Regional Stage. Scale bar = 5 mm in all figures, same scale in A–B, and in C–E.	Fig. 31. Details of shell ornamentation of cephalopods of the Vormsi–Pirgu regional stages, Estonia. A. Piersaloceras (?) sp., specimen TUG 1827-163, from Sutlema old quarry, Vormsi Regional Stage. B. Kiaeroceras urgense sp. nov. holotype TUG 103-75, from Urge quarry, Vormsi Regional Stage. C–D. Strandoceras sphynx (Schmidt, 1858). C. Specimen TAM G432:68, from Niibi hillock, Pirgu Regional Stage. D. Specimen TUG 1672-29, from Saxby village, Pirgu Regional Stage. E. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Regional Stage. Scale bar = 5 mm in all figures, same scale in A–B, and in C–E.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960C705DFDA2FB51FE4BF943.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988462/files/figure.png	https://doi.org/10.5281/zenodo.14988462	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	Fig. 41. Large species of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sphynx (Schmidt, 1858), specimen TUG 1672-29 from Saxby village, Vormsi Island, Pirgu Regional Stage. B. Strandoceras sulevipoegi sp. nov., holotype TUG 1745-209, from Salu, Pirgu Regional Stage. C. Strandoceras muhvi sp. nov., holotype TUG 42-432, from Kohila quarry, Vormsi Regional Stage. D. Strandoceras sulevipoegi, paratype TUG 42-399, from Vormsi Island, Vormsi–Pirgu regional stages. E. Strandoceras kalevipoegi sp. nov., holotype TUG 42-431, from Kohila quarry, Vormsi Regional Stage. F. Strandoceras sphynx (Schmidt, 1858), specimen TAM G432:68 from Niibi hillock, Läänemaa, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960C705DFDA2FB51FE4BF943.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988464/files/figure.png	https://doi.org/10.5281/zenodo.14988464	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	Fig. 42.Diagrams of variabilityinconch growth in speciesof Strandoceras Flower, 1946.A. S. kalevipoegi sp. nov. = diamonds; S. sphynx (Schmidt, 1858) = white circles; S. sulevipoegi sp. nov. = black circles. B. S. muhvi sp. nov. = crosses; S. schmidti = stars. Note that distinction of species in conch fragments with conch heights <50 mm is not possible based on angle of expansion. Negative angles indicate decreasing conch heights.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960C705DFDA2FB51FE4BF943.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988468/files/figure.png	https://doi.org/10.5281/zenodo.14988468	Fig. 43. Fragments of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. Strandoceras schmidti (Teichert, 1930), specimen TUG 1745-25, from Salu, Pirgu Regional Stage. C. Strandoceras kohilense sp. nov., holotype TUG 47-883, from Kohila quarry, Vormsi Regional Stage. Scale = 20 mm, same scale in all figures, all in lateral view.	Fig. 43. Fragments of Strandoceras Flower, 1946 of the Vormsi–Pirgu regional stages, Estonia. A. Strandoceras sulevipoegi sp. nov., paratype TUG 899-55, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. Strandoceras schmidti (Teichert, 1930), specimen TUG 1745-25, from Salu, Pirgu Regional Stage. C. Strandoceras kohilense sp. nov., holotype TUG 47-883, from Kohila quarry, Vormsi Regional Stage. Scale = 20 mm, same scale in all figures, all in lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960C705DFDA2FB51FE4BF943.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988442/files/figure.png	https://doi.org/10.5281/zenodo.14988442	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	Fig. 32. Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–B. Beloitoceras sinuososeptatum (Roemer, 1861). A. Specimen TUG 939-56, from Haapsalu holm, Pirgu Regional Stage, lateral view. B. Specimen TUG 1723-26, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view. C. Beloitoceras cf. sinuososeptatum (Roemer, 1861), specimen GIT 878-231, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. D. Cyrtorizoceras sp. A., specimen GIT 878-260, from Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage, lateral view.E–F. Cyrtorizoceras hariense sp. nov., holotype GIT 878-71, from Saxby shore (N), Vormsi Island, Estonia, Vormsi Regional Stage. E. View of prosiphuncular side. F. Lateral view. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960D705AFDCEF975FCA6FC34.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988472/files/figure.png	https://doi.org/10.5281/zenodo.14988472	Fig. 45. Fragments of indeterminate Multiceratoidea Mutvei, 2013 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discosorida fam., gen., et sp. indet. A, Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. A. Specimen GIT 878-188, lateral view. B. Specimen GIT 878-189, adapical view, position of the siphuncle toward the right. C–E. Multiceratoidea fam., gen., et sp. indet. A. C. Specimen GIT 840- 269, from Hosholm shore (tower) Pirgu Regional Stage, lateral view. D–E. Specimen GIT 878-76, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Lateral view. E. View of the concave side of conch curvature, position of siphuncle unknown. Scale bar = 20 mm, same scale in all figures.	Fig. 45. Fragments of indeterminate Multiceratoidea Mutvei, 2013 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discosorida fam., gen., et sp. indet. A, Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. A. Specimen GIT 878-188, lateral view. B. Specimen GIT 878-189, adapical view, position of the siphuncle toward the right. C–E. Multiceratoidea fam., gen., et sp. indet. A. C. Specimen GIT 840- 269, from Hosholm shore (tower) Pirgu Regional Stage, lateral view. D–E. Specimen GIT 878-76, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Lateral view. E. View of the concave side of conch curvature, position of siphuncle unknown. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960A705BFDCDFC40FC1FFB99.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988474/files/figure.png	https://doi.org/10.5281/zenodo.14988474	Fig. 46. Fragments of indeterminate Discosorida Flower, 1950 of the Vormsi Regional Stage, Estonia. A–B. Discosorida fam., gen. et sp. indet. B, specimen GIT 426-1100 from Paluküla quarry. A. Lateral view. B. Adapical view. C–D. Discosorida fam., gen. et sp. indet. C, specimen TUG 1745-284 from Kõrgessaare quarry, Hiiumaa Island. C. Lateral view. D. Adapical view. E–F. Discosorida fam., gen. et sp. indet. D, specimen TUG 1827-162 from Sutlema old quarry. E. View of the prosiphuncular side. F. Adapical view, note the discosoroid-like siphuncle. G. Adoral view, note the Kiaeroceras-like crosssection. Scale bar = 20 mm, same scale in all figures.	Fig. 46. Fragments of indeterminate Discosorida Flower, 1950 of the Vormsi Regional Stage, Estonia. A–B. Discosorida fam., gen. et sp. indet. B, specimen GIT 426-1100 from Paluküla quarry. A. Lateral view. B. Adapical view. C–D. Discosorida fam., gen. et sp. indet. C, specimen TUG 1745-284 from Kõrgessaare quarry, Hiiumaa Island. C. Lateral view. D. Adapical view. E–F. Discosorida fam., gen. et sp. indet. D, specimen TUG 1827-162 from Sutlema old quarry. E. View of the prosiphuncular side. F. Adapical view, note the discosoroid-like siphuncle. G. Adoral view, note the Kiaeroceras-like crosssection. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
93268783960B705BFDCDFB1BFDB4F851.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988474/files/figure.png	https://doi.org/10.5281/zenodo.14988474	Fig. 46. Fragments of indeterminate Discosorida Flower, 1950 of the Vormsi Regional Stage, Estonia. A–B. Discosorida fam., gen. et sp. indet. B, specimen GIT 426-1100 from Paluküla quarry. A. Lateral view. B. Adapical view. C–D. Discosorida fam., gen. et sp. indet. C, specimen TUG 1745-284 from Kõrgessaare quarry, Hiiumaa Island. C. Lateral view. D. Adapical view. E–F. Discosorida fam., gen. et sp. indet. D, specimen TUG 1827-162 from Sutlema old quarry. E. View of the prosiphuncular side. F. Adapical view, note the discosoroid-like siphuncle. G. Adoral view, note the Kiaeroceras-like crosssection. Scale bar = 20 mm, same scale in all figures.	Fig. 46. Fragments of indeterminate Discosorida Flower, 1950 of the Vormsi Regional Stage, Estonia. A–B. Discosorida fam., gen. et sp. indet. B, specimen GIT 426-1100 from Paluküla quarry. A. Lateral view. B. Adapical view. C–D. Discosorida fam., gen. et sp. indet. C, specimen TUG 1745-284 from Kõrgessaare quarry, Hiiumaa Island. C. Lateral view. D. Adapical view. E–F. Discosorida fam., gen. et sp. indet. D, specimen TUG 1827-162 from Sutlema old quarry. E. View of the prosiphuncular side. F. Adapical view, note the discosoroid-like siphuncle. G. Adoral view, note the Kiaeroceras-like crosssection. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396087059FDCDFEB1FCBCFE83.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988474/files/figure.png	https://doi.org/10.5281/zenodo.14988474	Fig. 46. Fragments of indeterminate Discosorida Flower, 1950 of the Vormsi Regional Stage, Estonia. A–B. Discosorida fam., gen. et sp. indet. B, specimen GIT 426-1100 from Paluküla quarry. A. Lateral view. B. Adapical view. C–D. Discosorida fam., gen. et sp. indet. C, specimen TUG 1745-284 from Kõrgessaare quarry, Hiiumaa Island. C. Lateral view. D. Adapical view. E–F. Discosorida fam., gen. et sp. indet. D, specimen TUG 1827-162 from Sutlema old quarry. E. View of the prosiphuncular side. F. Adapical view, note the discosoroid-like siphuncle. G. Adoral view, note the Kiaeroceras-like crosssection. Scale bar = 20 mm, same scale in all figures.	Fig. 46. Fragments of indeterminate Discosorida Flower, 1950 of the Vormsi Regional Stage, Estonia. A–B. Discosorida fam., gen. et sp. indet. B, specimen GIT 426-1100 from Paluküla quarry. A. Lateral view. B. Adapical view. C–D. Discosorida fam., gen. et sp. indet. C, specimen TUG 1745-284 from Kõrgessaare quarry, Hiiumaa Island. C. Lateral view. D. Adapical view. E–F. Discosorida fam., gen. et sp. indet. D, specimen TUG 1827-162 from Sutlema old quarry. E. View of the prosiphuncular side. F. Adapical view, note the discosoroid-like siphuncle. G. Adoral view, note the Kiaeroceras-like crosssection. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F670A5FDE1FBD2FB98FC01.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988478/files/figure.png	https://doi.org/10.5281/zenodo.14988478	Fig. 47. Annulated species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discoceras paopense sp. nov. from Vormsi Regional Stage. A. Paratype TUG 2-730, from unknown locality, Estonia. B. Holotype TUG 2-719, Paope limestone quarry, Vormsi Regional Stage. C–D. Discoceras antiquissimum (Eichwald, 1842) from Pirgu Regional Stage. C. Specimen GIT 878- 208, from Hosholm shore (tower), Vormsi Island. D. GIT 878-148, from Vohilaid (E), Vohilaid Island. Scale bar = 20 mm, same scale in all figures.	Fig. 47. Annulated species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discoceras paopense sp. nov. from Vormsi Regional Stage. A. Paratype TUG 2-730, from unknown locality, Estonia. B. Holotype TUG 2-719, Paope limestone quarry, Vormsi Regional Stage. C–D. Discoceras antiquissimum (Eichwald, 1842) from Pirgu Regional Stage. C. Specimen GIT 878- 208, from Hosholm shore (tower), Vormsi Island. D. GIT 878-148, from Vohilaid (E), Vohilaid Island. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F670A5FDE1FBD2FB98FC01.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988480/files/figure.png	https://doi.org/10.5281/zenodo.14988480	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F670A5FDE1FBD2FB98FC01.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988484/files/figure.png	https://doi.org/10.5281/zenodo.14988484	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F670A5FDE1FBD2FB98FC01.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988486/files/figure.png	https://doi.org/10.5281/zenodo.14988486	Fig. 50. Early growth stages of species of Discoceras Barrande, 1867 of the Pirgu–Porkuni regional stages, Estonia. A. D. antiquissimum (Eichwald, 1842), specimen GIT 425-375, from Haapsalu holm, Pirgu Regional Stage. B. D. saemanni (Hyatt, 1894), specimen GIT 426-425, from Röa-Jakobi quarry, Porkuni Regional Stage. Scale bars = 10 mm.	Fig. 50. Early growth stages of species of Discoceras Barrande, 1867 of the Pirgu–Porkuni regional stages, Estonia. A. D. antiquissimum (Eichwald, 1842), specimen GIT 425-375, from Haapsalu holm, Pirgu Regional Stage. B. D. saemanni (Hyatt, 1894), specimen GIT 426-425, from Röa-Jakobi quarry, Porkuni Regional Stage. Scale bars = 10 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F570A1FD9BFBB2FE91FE69.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988478/files/figure.png	https://doi.org/10.5281/zenodo.14988478	Fig. 47. Annulated species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discoceras paopense sp. nov. from Vormsi Regional Stage. A. Paratype TUG 2-730, from unknown locality, Estonia. B. Holotype TUG 2-719, Paope limestone quarry, Vormsi Regional Stage. C–D. Discoceras antiquissimum (Eichwald, 1842) from Pirgu Regional Stage. C. Specimen GIT 878- 208, from Hosholm shore (tower), Vormsi Island. D. GIT 878-148, from Vohilaid (E), Vohilaid Island. Scale bar = 20 mm, same scale in all figures.	Fig. 47. Annulated species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discoceras paopense sp. nov. from Vormsi Regional Stage. A. Paratype TUG 2-730, from unknown locality, Estonia. B. Holotype TUG 2-719, Paope limestone quarry, Vormsi Regional Stage. C–D. Discoceras antiquissimum (Eichwald, 1842) from Pirgu Regional Stage. C. Specimen GIT 878- 208, from Hosholm shore (tower), Vormsi Island. D. GIT 878-148, from Vohilaid (E), Vohilaid Island. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F570A1FD9BFBB2FE91FE69.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988480/files/figure.png	https://doi.org/10.5281/zenodo.14988480	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F570A1FD9BFBB2FE91FE69.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988484/files/figure.png	https://doi.org/10.5281/zenodo.14988484	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F570A1FD9BFBB2FE91FE69.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988488/files/figure.png	https://doi.org/10.5281/zenodo.14988488	Fig. 51. Species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. D. saemanni (Hyatt, 1894), 1934, specimen GIT 426-345, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. D. roemeri Strand, 1934, specimen TUG 39-711, from Niibi hillock, Pirgu Regional Stage. C. D. paopense sp. nov., paratype GIT 426-160, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. D. roemeri, specimen TUG 1723-27, from Vohilaid (E), Vohilaid Island, Pirgu Regional Stage. E. D. roemeri, specimen GIT 878-230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 51. Species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. D. saemanni (Hyatt, 1894), 1934, specimen GIT 426-345, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. D. roemeri Strand, 1934, specimen TUG 39-711, from Niibi hillock, Pirgu Regional Stage. C. D. paopense sp. nov., paratype GIT 426-160, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. D. roemeri, specimen TUG 1723-27, from Vohilaid (E), Vohilaid Island, Pirgu Regional Stage. E. D. roemeri, specimen GIT 878-230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F170AAFDA6FE0CFE42FEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988480/files/figure.png	https://doi.org/10.5281/zenodo.14988480	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F170AAFDA6FE0CFE42FEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988484/files/figure.png	https://doi.org/10.5281/zenodo.14988484	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F170AAFDA6FE0CFE42FEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988488/files/figure.png	https://doi.org/10.5281/zenodo.14988488	Fig. 51. Species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. D. saemanni (Hyatt, 1894), 1934, specimen GIT 426-345, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. D. roemeri Strand, 1934, specimen TUG 39-711, from Niibi hillock, Pirgu Regional Stage. C. D. paopense sp. nov., paratype GIT 426-160, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. D. roemeri, specimen TUG 1723-27, from Vohilaid (E), Vohilaid Island, Pirgu Regional Stage. E. D. roemeri, specimen GIT 878-230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 51. Species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. D. saemanni (Hyatt, 1894), 1934, specimen GIT 426-345, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. D. roemeri Strand, 1934, specimen TUG 39-711, from Niibi hillock, Pirgu Regional Stage. C. D. paopense sp. nov., paratype GIT 426-160, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. D. roemeri, specimen TUG 1723-27, from Vohilaid (E), Vohilaid Island, Pirgu Regional Stage. E. D. roemeri, specimen GIT 878-230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F170AAFDA6FE0CFE42FEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988492/files/figure.png	https://doi.org/10.5281/zenodo.14988492	Fig. 52. Details of the ornamentation of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–D. Discoceras sp. A. Specimen TUG 42-371, from Kohila, Vormsi Regional Stage. B. Specimen TUG 1745-212, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Specimen TUG 1745-203, from Paope quarry, Vormsi Regional Stage. D. Specimen TUG 2-726, from Saaremõisa (Lyckholm), Vormsi Regional Stage. E. D. roemeri Strand, 1934, specimen GIT 878- 230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Arrows mark areas in which the partly imbricated strong crenulation is well-preserved and visible. Scale bars = 5 mm in all figures.	Fig. 52. Details of the ornamentation of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–D. Discoceras sp. A. Specimen TUG 42-371, from Kohila, Vormsi Regional Stage. B. Specimen TUG 1745-212, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Specimen TUG 1745-203, from Paope quarry, Vormsi Regional Stage. D. Specimen TUG 2-726, from Saaremõisa (Lyckholm), Vormsi Regional Stage. E. D. roemeri Strand, 1934, specimen GIT 878- 230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Arrows mark areas in which the partly imbricated strong crenulation is well-preserved and visible. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F170AAFDA6FE0CFE42FEA2.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988496/files/figure.png	https://doi.org/10.5281/zenodo.14988496	Fig. 53. Camera lucida drawings of whorl cross-sections of specimens assigned to Discoceras roemeri Strand, 1934 or Discoceras saemanni (Hyatt, 1894) of the Vormsi–Pirgu regional stages, Estonia. Note the high ontogenetic and interspecific variability, and the taphonomic distortion among the specimens. Numbers refer to specimens: 1. GIT 426-348. 2. GIT 840-250. 3. GIT 878-68. 4. TUG 1745-175. 5. GIT 426-425. 6. GIT 426-109. 7. GIT 426-357. 8. GIT 426-365. 9. GIT 426-364. 10. GIT 426-1074. 11. GIT 426-343. 12. TUG 42-290. 13. TUG 939-65. 14. TUG 72-342. 15. TUG 1745-59. 16. GIT 878-69. 17. GIT 426-358. 18. GIT 878-56. 19. TAM G432:598. 20. GIT 426-361. 21. GIT 426-355. 22. TUG 42-367. 23. TAM G432:503. 24. GIT 426-354. 25. TUG 939-66. 26. GIT 426-107. 27. GIT 426-363 (see file 1 for specimen details).	Fig. 53. Camera lucida drawings of whorl cross-sections of specimens assigned to Discoceras roemeri Strand, 1934 or Discoceras saemanni (Hyatt, 1894) of the Vormsi–Pirgu regional stages, Estonia. Note the high ontogenetic and interspecific variability, and the taphonomic distortion among the specimens. Numbers refer to specimens: 1. GIT 426-348. 2. GIT 840-250. 3. GIT 878-68. 4. TUG 1745-175. 5. GIT 426-425. 6. GIT 426-109. 7. GIT 426-357. 8. GIT 426-365. 9. GIT 426-364. 10. GIT 426-1074. 11. GIT 426-343. 12. TUG 42-290. 13. TUG 939-65. 14. TUG 72-342. 15. TUG 1745-59. 16. GIT 878-69. 17. GIT 426-358. 18. GIT 878-56. 19. TAM G432:598. 20. GIT 426-361. 21. GIT 426-355. 22. TUG 42-367. 23. TAM G432:503. 24. GIT 426-354. 25. TUG 939-66. 26. GIT 426-107. 27. GIT 426-363 (see file 1 for specimen details).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396FA70A9FDB7FED5FAFCFD5A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988480/files/figure.png	https://doi.org/10.5281/zenodo.14988480	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 48. Whorl expansion rate of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WER of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WER of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WER of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396FA70A9FDB7FED5FAFCFD5A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988484/files/figure.png	https://doi.org/10.5281/zenodo.14988484	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	Fig. 49. Whorl width index species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. WWI of D. antiquissimum (Eichwald, 1842) (= circles) and D. paopense sp. nov. (= black triangles). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934). B. WWI of D roemeri Strand, 1934. White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934), and in Balashov (1953b); black squares = specimens described as D. angulatum (Saemann, 1853) in Strand (1934); black triangles = specimens described as Schroederoceras balaschovi Stumbur, 1956 in Stumbur (1956). C. WWI of D. saemanni (Hyatt, 1894). White circles = Estonian specimens described herein; black circles = specimens described in Strand (1934); black squares = specimens described as D. hyatti Strand, 1934 in Strand (1934).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396FA70A9FDB7FED5FAFCFD5A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988486/files/figure.png	https://doi.org/10.5281/zenodo.14988486	Fig. 50. Early growth stages of species of Discoceras Barrande, 1867 of the Pirgu–Porkuni regional stages, Estonia. A. D. antiquissimum (Eichwald, 1842), specimen GIT 425-375, from Haapsalu holm, Pirgu Regional Stage. B. D. saemanni (Hyatt, 1894), specimen GIT 426-425, from Röa-Jakobi quarry, Porkuni Regional Stage. Scale bars = 10 mm.	Fig. 50. Early growth stages of species of Discoceras Barrande, 1867 of the Pirgu–Porkuni regional stages, Estonia. A. D. antiquissimum (Eichwald, 1842), specimen GIT 425-375, from Haapsalu holm, Pirgu Regional Stage. B. D. saemanni (Hyatt, 1894), specimen GIT 426-425, from Röa-Jakobi quarry, Porkuni Regional Stage. Scale bars = 10 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396FA70A9FDB7FED5FAFCFD5A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988488/files/figure.png	https://doi.org/10.5281/zenodo.14988488	Fig. 51. Species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. D. saemanni (Hyatt, 1894), 1934, specimen GIT 426-345, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. D. roemeri Strand, 1934, specimen TUG 39-711, from Niibi hillock, Pirgu Regional Stage. C. D. paopense sp. nov., paratype GIT 426-160, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. D. roemeri, specimen TUG 1723-27, from Vohilaid (E), Vohilaid Island, Pirgu Regional Stage. E. D. roemeri, specimen GIT 878-230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures.	Fig. 51. Species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A. D. saemanni (Hyatt, 1894), 1934, specimen GIT 426-345, from Saxby shore, Vormsi Island, Vormsi Regional Stage. B. D. roemeri Strand, 1934, specimen TUG 39-711, from Niibi hillock, Pirgu Regional Stage. C. D. paopense sp. nov., paratype GIT 426-160, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. D. roemeri, specimen TUG 1723-27, from Vohilaid (E), Vohilaid Island, Pirgu Regional Stage. E. D. roemeri, specimen GIT 878-230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396FA70A9FDB7FED5FAFCFD5A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988496/files/figure.png	https://doi.org/10.5281/zenodo.14988496	Fig. 53. Camera lucida drawings of whorl cross-sections of specimens assigned to Discoceras roemeri Strand, 1934 or Discoceras saemanni (Hyatt, 1894) of the Vormsi–Pirgu regional stages, Estonia. Note the high ontogenetic and interspecific variability, and the taphonomic distortion among the specimens. Numbers refer to specimens: 1. GIT 426-348. 2. GIT 840-250. 3. GIT 878-68. 4. TUG 1745-175. 5. GIT 426-425. 6. GIT 426-109. 7. GIT 426-357. 8. GIT 426-365. 9. GIT 426-364. 10. GIT 426-1074. 11. GIT 426-343. 12. TUG 42-290. 13. TUG 939-65. 14. TUG 72-342. 15. TUG 1745-59. 16. GIT 878-69. 17. GIT 426-358. 18. GIT 878-56. 19. TAM G432:598. 20. GIT 426-361. 21. GIT 426-355. 22. TUG 42-367. 23. TAM G432:503. 24. GIT 426-354. 25. TUG 939-66. 26. GIT 426-107. 27. GIT 426-363 (see file 1 for specimen details).	Fig. 53. Camera lucida drawings of whorl cross-sections of specimens assigned to Discoceras roemeri Strand, 1934 or Discoceras saemanni (Hyatt, 1894) of the Vormsi–Pirgu regional stages, Estonia. Note the high ontogenetic and interspecific variability, and the taphonomic distortion among the specimens. Numbers refer to specimens: 1. GIT 426-348. 2. GIT 840-250. 3. GIT 878-68. 4. TUG 1745-175. 5. GIT 426-425. 6. GIT 426-109. 7. GIT 426-357. 8. GIT 426-365. 9. GIT 426-364. 10. GIT 426-1074. 11. GIT 426-343. 12. TUG 42-290. 13. TUG 939-65. 14. TUG 72-342. 15. TUG 1745-59. 16. GIT 878-69. 17. GIT 426-358. 18. GIT 878-56. 19. TAM G432:598. 20. GIT 426-361. 21. GIT 426-355. 22. TUG 42-367. 23. TAM G432:503. 24. GIT 426-354. 25. TUG 939-66. 26. GIT 426-107. 27. GIT 426-363 (see file 1 for specimen details).	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396FA70A9FDB7FED5FAFCFD5A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988492/files/figure.png	https://doi.org/10.5281/zenodo.14988492	Fig. 52. Details of the ornamentation of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–D. Discoceras sp. A. Specimen TUG 42-371, from Kohila, Vormsi Regional Stage. B. Specimen TUG 1745-212, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Specimen TUG 1745-203, from Paope quarry, Vormsi Regional Stage. D. Specimen TUG 2-726, from Saaremõisa (Lyckholm), Vormsi Regional Stage. E. D. roemeri Strand, 1934, specimen GIT 878- 230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Arrows mark areas in which the partly imbricated strong crenulation is well-preserved and visible. Scale bars = 5 mm in all figures.	Fig. 52. Details of the ornamentation of species of Discoceras Barrande, 1867 of the Vormsi–Pirgu regional stages, Estonia. A–D. Discoceras sp. A. Specimen TUG 42-371, from Kohila, Vormsi Regional Stage. B. Specimen TUG 1745-212, from Saxby shore, Vormsi Island, Vormsi Regional Stage. C. Specimen TUG 1745-203, from Paope quarry, Vormsi Regional Stage. D. Specimen TUG 2-726, from Saaremõisa (Lyckholm), Vormsi Regional Stage. E. D. roemeri Strand, 1934, specimen GIT 878- 230, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. Arrows mark areas in which the partly imbricated strong crenulation is well-preserved and visible. Scale bars = 5 mm in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F970A9FDB5FD5DFDF4F959.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988472/files/figure.png	https://doi.org/10.5281/zenodo.14988472	Fig. 45. Fragments of indeterminate Multiceratoidea Mutvei, 2013 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discosorida fam., gen., et sp. indet. A, Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. A. Specimen GIT 878-188, lateral view. B. Specimen GIT 878-189, adapical view, position of the siphuncle toward the right. C–E. Multiceratoidea fam., gen., et sp. indet. A. C. Specimen GIT 840- 269, from Hosholm shore (tower) Pirgu Regional Stage, lateral view. D–E. Specimen GIT 878-76, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Lateral view. E. View of the concave side of conch curvature, position of siphuncle unknown. Scale bar = 20 mm, same scale in all figures.	Fig. 45. Fragments of indeterminate Multiceratoidea Mutvei, 2013 of the Vormsi–Pirgu regional stages, Estonia. A–B. Discosorida fam., gen., et sp. indet. A, Vohilaid shore (E), Vohilaid Island, Pirgu Regional Stage. A. Specimen GIT 878-188, lateral view. B. Specimen GIT 878-189, adapical view, position of the siphuncle toward the right. C–E. Multiceratoidea fam., gen., et sp. indet. A. C. Specimen GIT 840- 269, from Hosholm shore (tower) Pirgu Regional Stage, lateral view. D–E. Specimen GIT 878-76, from Saxby shore, Vormsi Island, Vormsi Regional Stage. D. Lateral view. E. View of the concave side of conch curvature, position of siphuncle unknown. Scale bar = 20 mm, same scale in all figures.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396F970B6FDB4F95BFAFDFD3E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988458/files/figure.png	https://doi.org/10.5281/zenodo.14988458	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	Fig. 39. Hosholmoceras gen. nov., and an indeterminate fragment of a multiceratid of the Pirgu Regional Stage, Estonia. A–B, D. Hosholmoceras triangulatum sp. nov., holotype TUG 119-2, from Hosholm shore (tower), Vormsi Island. A. View of the antisiphuncular side. B. Lateral view. C. Multiceratoidea gen. et sp. indet. B, specimen TUG 1743-37, from Saxby shore, Vormsi Island, Vormsi Regional Stage, lateral view. D. Adapical view. E–G. Hosholmoceras ovalis gen et sp. nov., specimen GIT 840-252 (holotype), from Hosholm shore (tower), Vormsi Island. E–F. Specimen GIT 878-170. E. View of the prosiphuncular side. F. Lateral view. G. Specimen GIT 840-252 (holotype), lateral view.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
9326878396E670B6FDB4FCBAFDA3F9D0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/14988432/files/figure.png	https://doi.org/10.5281/zenodo.14988432	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	Fig. 28. Graciloceratidae Flower, 1950 and Oncoceratidae Hyatt, 1884 of the Vormsi–Pirgu regional stages, Estonia. A–D. Hiiumoceras hiiuense gen et sp. nov., paratype GIT 426-421, from Paluküla, Hiimuaa Island, Vormsi Regional Stage. A. Lateral view. B. View of antisiphuncular side. C. View of prosiphuncular side. D. Adapical view. E. Rizosceras teres sp. nov., holotype TUG 1745-188, from Saaremõisa (Lyckholm), Vormsi Regional Stage, view of prosiphuncular side with details of siphuncle visible. F, I–J. Beloitoceras (?) sp., specimen GIT 426-1081, from Pirgu river outcrops, Raplamaa, Pirgu Regional Stage. F. Lateral view. G–H. Beloitoceras uuemoisense sp. nov., holotype GIT 1745-290, from Uuemõisa, Läänemaa, Pirgu Regional Stage. G. Lateral view. H. View of antisiphuncular side. I. View of prosiphuncular side. J. Adapical view. K–L. Multiceratoidea gen. et sp. indet. C, specimen GIT 878- 234, from Hosholm shore (tower), Vormsi Island, Pirgu Regional Stage. K. Adapical view. L. Lateral view. Scale bar = 10 mm in all figures except E, same scale in A–D, and in F–K. Scale bar in E = 5 mm.	2025-03-03	Kröger, Björn		Zenodo	biologists	Kröger, Björn			
