taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
03F4630BFFDB88023EAF57DF37FF6634.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017491/files/figure.png	https://doi.org/10.5281/zenodo.17017491	FIGURE 3. Clathrina conifera (MNRJ2009). A. Preserved specimen (arrowhead points to an osculum). B. Tangential section of the cormus. C. Triactines.	FIGURE 3. Clathrina conifera (MNRJ2009). A. Preserved specimen (arrowhead points to an osculum). B. Tangential section of the cormus. C. Triactines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFDD88013EAF50AF349A60C5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017493/files/figure.png	https://doi.org/10.5281/zenodo.17017493	FIGURE 4. Ascandra arenaria sp. nov. (MNRJ757—Holotype). A. Preserved specimen. B. Tangential section of a tube. C. Diactines protruding from the tube surface. D. Lumen of a tube with the projecting apical actines of the tetractines.	FIGURE 4. Ascandra arenaria sp. nov. (MNRJ757—Holotype). A. Preserved specimen. B. Tangential section of a tube. C. Diactines protruding from the tube surface. D. Lumen of a tube with the projecting apical actines of the tetractines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFDD88013EAF50AF349A60C5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017497/files/figure.png	https://doi.org/10.5281/zenodo.17017497	FIGURE 5. Ascandra arenaria sp. nov. (MNRJ757—Holotype).A. Lanceolate (on the left) and fusiform (on the right) diactines. B. Triactines. C. Sagittal triactine (very rare). D. Tetractines (arrow points to the apical actine). E. Detail of an apical actine of a tetractine.	FIGURE 5. Ascandra arenaria sp. nov. (MNRJ757—Holotype).A. Lanceolate (on the left) and fusiform (on the right) diactines. B. Triactines. C. Sagittal triactine (very rare). D. Tetractines (arrow points to the apical actine). E. Detail of an apical actine of a tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFDF881F3EAF53C73588608C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017499/files/figure.png	https://doi.org/10.5281/zenodo.17017499	FIGURE 6. Amphoriscus pedunculatus. A, B. Preserved specimens MNRJ2043 and MNRJ30125, respectively. C. Tangential section of the cortex. D. Cross section. E. Subatrial skeleton (arrowheads).F.Cortical triactine.G. Cortical tetractine. H. Subatrial triactine. I. Atrial tetractine. All pictures were taken from the specimen MNRJ2043. cx = cortex, at = atrium, p = paired actine, u = unpaired actine, ap = apical actine.	FIGURE 6. Amphoriscus pedunculatus. A, B. Preserved specimens MNRJ2043 and MNRJ30125, respectively. C. Tangential section of the cortex. D. Cross section. E. Subatrial skeleton (arrowheads).F.Cortical triactine.G. Cortical tetractine. H. Subatrial triactine. I. Atrial tetractine. All pictures were taken from the specimen MNRJ2043. cx = cortex, at = atrium, p = paired actine, u = unpaired actine, ap = apical actine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC188163EAF513F35466428.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017501/files/figure.png	https://doi.org/10.5281/zenodo.17017501	FIGURE 7. Amphoriscus tenax sp. nov. A, B. Preserved MNRJ30124 (Holotype) and fragment of UFRJPOR5976 (Paratype). C. Specimen UFRJPOR5976 in vivo (Photo: V. Padula). D. Detail of the specimen UFRJPOR5976. E. Specimen UFRJPOR6061. Arrows point to tufts of anchor triactines along the body, while arrowheads point to root-tufts of anchor triactines.	FIGURE 7. Amphoriscus tenax sp. nov. A, B. Preserved MNRJ30124 (Holotype) and fragment of UFRJPOR5976 (Paratype). C. Specimen UFRJPOR5976 in vivo (Photo: V. Padula). D. Detail of the specimen UFRJPOR5976. E. Specimen UFRJPOR6061. Arrows point to tufts of anchor triactines along the body, while arrowheads point to root-tufts of anchor triactines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC188163EAF513F35466428.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017505/files/figure.png	https://doi.org/10.5281/zenodo.17017505	FIGURE 8. Amphoriscus tenax sp. nov. (MNRJ30124—Holotype). A. Oscular skeleton. B. Tangential section of the cortex (arrowheads point to cortical triactines). C. Cross section. D. Cross section showing subatrial triactines (white arrowhead) and the apical actines of the atrial tetractines (black arrowhead). E. Subatrial tetractine (arrowhead). F. Tangential section of the atrium. cx = cortex, at = atrium.	FIGURE 8. Amphoriscus tenax sp. nov. (MNRJ30124—Holotype). A. Oscular skeleton. B. Tangential section of the cortex (arrowheads point to cortical triactines). C. Cross section. D. Cross section showing subatrial triactines (white arrowhead) and the apical actines of the atrial tetractines (black arrowhead). E. Subatrial tetractine (arrowhead). F. Tangential section of the atrium. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC188163EAF513F35466428.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017511/files/figure.png	https://doi.org/10.5281/zenodo.17017511	FIGURE 9. Diactines and anchor triactines of Amphoriscus tenax sp. nov. A–D. MNRJ30124 (Holotype). E–H. UFRJPOR5976 (Paratype). A. Diactines I and II. B, C. Distal jagged tip of diactines II. D. Tuft of anchor triactines (arrowhead), most of them broken. E. Tuft of anchor triactines, with detail of the hooks in F. G, H. Root-tufts at the base of the sponge. cx = cortex.	FIGURE 9. Diactines and anchor triactines of Amphoriscus tenax sp. nov. A–D. MNRJ30124 (Holotype). E–H. UFRJPOR5976 (Paratype). A. Diactines I and II. B, C. Distal jagged tip of diactines II. D. Tuft of anchor triactines (arrowhead), most of them broken. E. Tuft of anchor triactines, with detail of the hooks in F. G, H. Root-tufts at the base of the sponge. cx = cortex.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC188163EAF513F35466428.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017513/files/figure.png	https://doi.org/10.5281/zenodo.17017513	FIGURE 10. Amphoriscus tenax sp. nov. (UFRJPOR5976—Paratype) in SEM.A, B. Dense root-tufts of anchor triactines at the base of the sponge. C. Detail of the root-tufts. Detail of the hook-shaped paired actines of the anchor triactines.	FIGURE 10. Amphoriscus tenax sp. nov. (UFRJPOR5976—Paratype) in SEM.A, B. Dense root-tufts of anchor triactines at the base of the sponge. C. Detail of the root-tufts. Detail of the hook-shaped paired actines of the anchor triactines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC188163EAF513F35466428.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017515/files/figure.png	https://doi.org/10.5281/zenodo.17017515	FIGURE 11. Amphoriscus tenax sp. nov. (MNRJ30124—Holotype). A. Diactine I. B. Diactine II. C. Cortical triactines. D. Cortical tetractines. E. Subatrial triactine and tetractine. F. Atrial triactine. G. Atrial tetractines. H. Anchor triactine. I. Detail of the paired actines of the anchor triactine.	FIGURE 11. Amphoriscus tenax sp. nov. (MNRJ30124—Holotype). A. Diactine I. B. Diactine II. C. Cortical triactines. D. Cortical tetractines. E. Subatrial triactine and tetractine. F. Atrial triactine. G. Atrial tetractines. H. Anchor triactine. I. Detail of the paired actines of the anchor triactine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC188163EAF513F35466428.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017489/files/figure.png	https://doi.org/10.5281/zenodo.17017489	FIGURE 2. Maximum likelihood phylogenetic tree based on C-LSU sequences of the subclass Calcaronea. Tree rooted with Leucosolenia complicata. Species sequences generated in this work are in bold, and the clades containing them are highlighted in different colours. Support values (Bootstrap> 70%) are shown at the nodes. H = Holotype, P = Paratype, SP = São Paulo State, SC = Santa Catarina State, ES = Espírito Santo State.	FIGURE 2. Maximum likelihood phylogenetic tree based on C-LSU sequences of the subclass Calcaronea. Tree rooted with Leucosolenia complicata. Species sequences generated in this work are in bold, and the clades containing them are highlighted in different colours. Support values (Bootstrap> 70%) are shown at the nodes. H = Holotype, P = Paratype, SP = São Paulo State, SC = Santa Catarina State, ES = Espírito Santo State.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC988123EAF51803304617C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017523/files/figure.png	https://doi.org/10.5281/zenodo.17017523	FIGURE 12. Leucilla uter. A, B. Preserved specimens MNRJ30127 and MRNJ 30126 (arrows point to projecting diactines). C. Skeleton of the oscular crown (arrowheads point to diactines), with details of the oscular spicules in the inset. D. Cross section. E. Tangential section of the cortex, showing the cortical triactines (arrowheads and inset). F. Cross section with arrowheads pointing to a subatrial triactine (white arrowhead) and tetractine (black arrowhead). G. Tangential section of the atrium. All skeleton photos were taken from the specimen MNRJ30127. cx = cortex, ec = exhalant canals, at = atrium.	FIGURE 12. Leucilla uter. A, B. Preserved specimens MNRJ30127 and MRNJ 30126 (arrows point to projecting diactines). C. Skeleton of the oscular crown (arrowheads point to diactines), with details of the oscular spicules in the inset. D. Cross section. E. Tangential section of the cortex, showing the cortical triactines (arrowheads and inset). F. Cross section with arrowheads pointing to a subatrial triactine (white arrowhead) and tetractine (black arrowhead). G. Tangential section of the atrium. All skeleton photos were taken from the specimen MNRJ30127. cx = cortex, ec = exhalant canals, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFC988123EAF51803304617C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017808/files/figure.png	https://doi.org/10.5281/zenodo.17017808	FIGURE 13. Leucilla uter (MNRJ30127). A. Diactines. B. Cortical triactines. C. Cortical tetractines. D. Subatrial triactines. E. Subatrial tetractines. F. Atrial tetractine.	FIGURE 13. Leucilla uter (MNRJ30127). A. Diactines. B. Cortical triactines. C. Cortical tetractines. D. Subatrial triactines. E. Subatrial tetractines. F. Atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFCD882D3EAF546B341466D8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017531/files/figure.png	https://doi.org/10.5281/zenodo.17017531	FIGURE 14. Paraleucilla magna. A. Specimen MNRJ2996 in vivo. B, C. Preserved specimens MNRJ2996 and MNRJ5831. D. Tangential section of the oscular region. E. Cross section of the skeleton showing a subcortical lacuna (asterisk). cx = cortex, at = atrium.	FIGURE 14. Paraleucilla magna. A. Specimen MNRJ2996 in vivo. B, C. Preserved specimens MNRJ2996 and MNRJ5831. D. Tangential section of the oscular region. E. Cross section of the skeleton showing a subcortical lacuna (asterisk). cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFCD882D3EAF546B341466D8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017541/files/figure.png	https://doi.org/10.5281/zenodo.17017541	FIGURE 15. Paraleucilla magna (MNRJ2996). A. Tangential section of the cortex. B. Cross section of the body wall. C. Subatrial triactine (arrowhead). D. Subatrial tetractine (arrowhead). E, F. Smooth and spined (respectively) apical actines of atrial tetractines. G. Tangential section of the atrium. cx = cortex, at = atrium.	FIGURE 15. Paraleucilla magna (MNRJ2996). A. Tangential section of the cortex. B. Cross section of the body wall. C. Subatrial triactine (arrowhead). D. Subatrial tetractine (arrowhead). E, F. Smooth and spined (respectively) apical actines of atrial tetractines. G. Tangential section of the atrium. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFCD882D3EAF546B341466D8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017547/files/figure.png	https://doi.org/10.5281/zenodo.17017547	FIGURE 16. Paraleucilla magna. A. Cortical triactines. B. Cortical tetractines. C. Subatrial triactines. D. Subatrial tetractines. E. Atrial triactines. F. Atrial tetractine with smooth apical actine in detail. G. Atrial tetractine with spined apical actine in detail. All spicules are from MNRJ2996, except G (MNRJ5831). U = unpaired actine, P = paired actine, Ap = Apical actine.	FIGURE 16. Paraleucilla magna. A. Cortical triactines. B. Cortical tetractines. C. Subatrial triactines. D. Subatrial tetractines. E. Atrial triactines. F. Atrial tetractine with smooth apical actine in detail. G. Atrial tetractine with spined apical actine in detail. All spicules are from MNRJ2996, except G (MNRJ5831). U = unpaired actine, P = paired actine, Ap = Apical actine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFF388283EAF52A636AA66D9.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017551/files/figure.png	https://doi.org/10.5281/zenodo.17017551	FIGURE 17. Paraleucilla perlucida. A–C. Preserved specimens MNRJ30131, UFRJPOR6892 and UFRJPOR6891. D. Cross section showing a cortical triactine (arrowhead). E. Tuft of diactines (arrow) in the cortex. F. Cross section of the choanosome showing the outer region (continuous line), the inner region (dotted line) and the exhalant canals (asterisks). G. Detail of the outer region, with subatrial triactines (black arrowheads) and tetractine (white arrowhead). H. Tangential section of the atrium. All skeleton pictures were taken from the specimen MNRJ30131. cx = cortex, at = atrium.	FIGURE 17. Paraleucilla perlucida. A–C. Preserved specimens MNRJ30131, UFRJPOR6892 and UFRJPOR6891. D. Cross section showing a cortical triactine (arrowhead). E. Tuft of diactines (arrow) in the cortex. F. Cross section of the choanosome showing the outer region (continuous line), the inner region (dotted line) and the exhalant canals (asterisks). G. Detail of the outer region, with subatrial triactines (black arrowheads) and tetractine (white arrowhead). H. Tangential section of the atrium. All skeleton pictures were taken from the specimen MNRJ30131. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFF388283EAF52A636AA66D9.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017559/files/figure.png	https://doi.org/10.5281/zenodo.17017559	FIGURE 18. Paraleucilla perlucida (MNRJ30133). A. Preserved specimen. B. Cross section showing cortical triactines of different shapes and sizes (arrowheads).	FIGURE 18. Paraleucilla perlucida (MNRJ30133). A. Preserved specimen. B. Cross section showing cortical triactines of different shapes and sizes (arrowheads).	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFF388283EAF52A636AA66D9.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017563/files/figure.png	https://doi.org/10.5281/zenodo.17017563	FIGURE 19. Paraleucilla perlucida (MNRJ30131). A. Diactine. B. Cortical triactines. C. Cortical tetractines. D. Subatrial triactines I. E. Subatrial tetractines I. F. Subatrial triactine II. G. Atrial tetractine.	FIGURE 19. Paraleucilla perlucida (MNRJ30131). A. Diactine. B. Cortical triactines. C. Cortical tetractines. D. Subatrial triactines I. E. Subatrial tetractines I. F. Subatrial triactine II. G. Atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFF388283EAF52A636AA66D9.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017489/files/figure.png	https://doi.org/10.5281/zenodo.17017489	FIGURE 2. Maximum likelihood phylogenetic tree based on C-LSU sequences of the subclass Calcaronea. Tree rooted with Leucosolenia complicata. Species sequences generated in this work are in bold, and the clades containing them are highlighted in different colours. Support values (Bootstrap> 70%) are shown at the nodes. H = Holotype, P = Paratype, SP = São Paulo State, SC = Santa Catarina State, ES = Espírito Santo State.	FIGURE 2. Maximum likelihood phylogenetic tree based on C-LSU sequences of the subclass Calcaronea. Tree rooted with Leucosolenia complicata. Species sequences generated in this work are in bold, and the clades containing them are highlighted in different colours. Support values (Bootstrap> 70%) are shown at the nodes. H = Holotype, P = Paratype, SP = São Paulo State, SC = Santa Catarina State, ES = Espírito Santo State.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFF888233EAF5158358865DC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017567/files/figure.png	https://doi.org/10.5281/zenodo.17017567	FIGURE 20. Grantia kempfi (UFRJPOR7009). A. Preserved specimen. B. Cross section of the body wall. C. Cross section showing the cortical skeleton (ostiolar triactines in the inset). D. Cross section showing the tubar skeleton. E. Subatrial triactines (arrows) and apical actines of the atrial tetractines. F. Tangential section of the atrial skeleton. cx = cortex, at = atrium.	FIGURE 20. Grantia kempfi (UFRJPOR7009). A. Preserved specimen. B. Cross section of the body wall. C. Cross section showing the cortical skeleton (ostiolar triactines in the inset). D. Cross section showing the tubar skeleton. E. Subatrial triactines (arrows) and apical actines of the atrial tetractines. F. Tangential section of the atrial skeleton. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFF888233EAF5158358865DC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017577/files/figure.png	https://doi.org/10.5281/zenodo.17017577	FIGURE 21. Grantia kempfi (UFRJPOR7009). A. Trichoxea. B. Large diactines. C. Lanceolate tip of a large diactine. D. Small diactine. E. Cortical triactines. F. Tubar triactines. G. Tubar tetractine. H. Subatrial triactines (one of the paired actines is broken). I. Subatrial tetractine. J. Atrial triactine. K. Atrial tetractine.	FIGURE 21. Grantia kempfi (UFRJPOR7009). A. Trichoxea. B. Large diactines. C. Lanceolate tip of a large diactine. D. Small diactine. E. Cortical triactines. F. Tubar triactines. G. Tubar tetractine. H. Subatrial triactines (one of the paired actines is broken). I. Subatrial tetractine. J. Atrial triactine. K. Atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFFC883E3EAF50CB343565DC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017581/files/figure.png	https://doi.org/10.5281/zenodo.17017581	FIGURE 22. Leucandra anoducta sp. nov. (MNRJ5908—Holotype).A. Preserved specimen. B. Cross section of the body wall. C. Skeleton of the oscular margin (arrowhead points to a diactine). D. Tangential section of the cortical skeleton. E, F. Cortical microdiactines. G. Tangential section of the atrial skeleton. cx = cortex, at = atrium.	FIGURE 22. Leucandra anoducta sp. nov. (MNRJ5908—Holotype).A. Preserved specimen. B. Cross section of the body wall. C. Skeleton of the oscular margin (arrowhead points to a diactine). D. Tangential section of the cortical skeleton. E, F. Cortical microdiactines. G. Tangential section of the atrial skeleton. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFFC883E3EAF50CB343565DC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017591/files/figure.png	https://doi.org/10.5281/zenodo.17017591	FIGURE 23. Leucandra anoducta sp. nov. (MNRJ30123—Paratype). A. Preserved specimens. B. Oscular tube bearing several diactines (arrowhead). C. Tangential section of the cortical skeleton of the same oscular tube. D. Cross section of the body wall. cx = cortex, at = atrium.	FIGURE 23. Leucandra anoducta sp. nov. (MNRJ30123—Paratype). A. Preserved specimens. B. Oscular tube bearing several diactines (arrowhead). C. Tangential section of the cortical skeleton of the same oscular tube. D. Cross section of the body wall. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFFC883E3EAF50CB343565DC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017595/files/figure.png	https://doi.org/10.5281/zenodo.17017595	FIGURE 24. Leucandra anoducta sp. nov. (MNRJ5908—Holotype) in SEM. A–B. Cortical skeleton. A. Overview of the cortical skeleton. B. Cortex with a diactine (arrowhead 1), a microdiactine (arrowhead 2) and trichoxeas (arrowheads 3). C. Bundle of trichoxeas on the cortex. D. Cortical microdiactine with spines at the distal tip (arrowhead).	FIGURE 24. Leucandra anoducta sp. nov. (MNRJ5908—Holotype) in SEM. A–B. Cortical skeleton. A. Overview of the cortical skeleton. B. Cortex with a diactine (arrowhead 1), a microdiactine (arrowhead 2) and trichoxeas (arrowheads 3). C. Bundle of trichoxeas on the cortex. D. Cortical microdiactine with spines at the distal tip (arrowhead).	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFFC883E3EAF50CB343565DC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017599/files/figure.png	https://doi.org/10.5281/zenodo.17017599	FIGURE 25. Leucandra anoducta sp. nov. (MNRJ5908 and MNRJ30123). A. Large diactine. B. Small diactine. C. Microdiactines. D. Cortical triactines. E. Choanosomal triactines. F. Atrial triactines. G. Atrial tetractines. All spicules are from the holotype, except for A (taken from MNRJ30123).	FIGURE 25. Leucandra anoducta sp. nov. (MNRJ5908 and MNRJ30123). A. Large diactine. B. Small diactine. C. Microdiactines. D. Cortical triactines. E. Choanosomal triactines. F. Atrial triactines. G. Atrial tetractines. All spicules are from the holotype, except for A (taken from MNRJ30123).	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE2883A3EAF52A634B0656C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017603/files/figure.png	https://doi.org/10.5281/zenodo.17017603	FIGURE 26. Leucandra caribea. A, B. Preserved specimens MNRJ5856 and UFRJPOR7023 (arrow points to the oscular membrane). (C–G) MNRJ5856. C. Oscular skeleton (arrowhead in the inset points to short trichoxeas). D. Tangential section of the cortical skeleton, showing the small (arrowhead 1) and large (arrowhead 2) cortical triactines. E. Cross section of the body wall. F. Triactines (arrowhead 1) and tetractines (arrowhead 2) of the canals. G. Tangential section of the atrium. cx = cortex, at = atrium, c = exhalant canals.	FIGURE 26. Leucandra caribea. A, B. Preserved specimens MNRJ5856 and UFRJPOR7023 (arrow points to the oscular membrane). (C–G) MNRJ5856. C. Oscular skeleton (arrowhead in the inset points to short trichoxeas). D. Tangential section of the cortical skeleton, showing the small (arrowhead 1) and large (arrowhead 2) cortical triactines. E. Cross section of the body wall. F. Triactines (arrowhead 1) and tetractines (arrowhead 2) of the canals. G. Tangential section of the atrium. cx = cortex, at = atrium, c = exhalant canals.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE2883A3EAF52A634B0656C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017611/files/figure.png	https://doi.org/10.5281/zenodo.17017611	FIGURE 27. Leucandra caribea (MNRJ5856).A. Cortical triactines. B. Choanosomal triactines. C. Triactine and tetractines of the canals. D. Atrial triactines. E. Atrial tetractines.	FIGURE 27. Leucandra caribea (MNRJ5856).A. Cortical triactines. B. Choanosomal triactines. C. Triactine and tetractines of the canals. D. Atrial triactines. E. Atrial tetractines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE2883A3EAF52A634B0656C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017567/files/figure.png	https://doi.org/10.5281/zenodo.17017567	FIGURE 20. Grantia kempfi (UFRJPOR7009). A. Preserved specimen. B. Cross section of the body wall. C. Cross section showing the cortical skeleton (ostiolar triactines in the inset). D. Cross section showing the tubar skeleton. E. Subatrial triactines (arrows) and apical actines of the atrial tetractines. F. Tangential section of the atrial skeleton. cx = cortex, at = atrium.	FIGURE 20. Grantia kempfi (UFRJPOR7009). A. Preserved specimen. B. Cross section of the body wall. C. Cross section showing the cortical skeleton (ostiolar triactines in the inset). D. Cross section showing the tubar skeleton. E. Subatrial triactines (arrows) and apical actines of the atrial tetractines. F. Tangential section of the atrial skeleton. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE588333EAF575337E56610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017615/files/figure.png	https://doi.org/10.5281/zenodo.17017615	FIGURE 28. Leucandra rudifera (MNRJ30132). A. Preserved specimen. B. Oscular crown. C. Skeleton of the osculum, showing trichoxeas, triactines and tetractines. D. Cross section of the body wall. cx = cortex, at = atrium, c = choanosomal canals, asterisks = lacunae.	FIGURE 28. Leucandra rudifera (MNRJ30132). A. Preserved specimen. B. Oscular crown. C. Skeleton of the osculum, showing trichoxeas, triactines and tetractines. D. Cross section of the body wall. cx = cortex, at = atrium, c = choanosomal canals, asterisks = lacunae.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE588333EAF575337E56610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017619/files/figure.png	https://doi.org/10.5281/zenodo.17017619	FIGURE 29. Leucandra rudifera (MNRJ30132). A. Cross section of the body wall. B. Tangential section of the cortex (arrowheads point to tetractines). C. Cortical tetractine. D. Subcortical triactine (arrowhead). E. Choanosomal canal. F. Atrial skeleton in cross section (atrial pentactine in the inset). cx = cortex, at = atrium, c = choanosomal canals, asterisks = lacunae.	FIGURE 29. Leucandra rudifera (MNRJ30132). A. Cross section of the body wall. B. Tangential section of the cortex (arrowheads point to tetractines). C. Cortical tetractine. D. Subcortical triactine (arrowhead). E. Choanosomal canal. F. Atrial skeleton in cross section (atrial pentactine in the inset). cx = cortex, at = atrium, c = choanosomal canals, asterisks = lacunae.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE588333EAF575337E56610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017625/files/figure.png	https://doi.org/10.5281/zenodo.17017625	FIGURE 30. Leucandra rudifera (MNRJ30132) in SEM. (A–B) Cortical skeleton. A. Trichoxeas and cortical microdiactines lying on the surface. B. Cortical microdiactines protruding through the surface. (C–F) Atrial skeleton. C. Mesh of grapnel spicules covering the atrial tetractines. D. Group of atrial grapnel spicules. E. Mesh of grapnel spicules and apical actines of the atrial tetractines. F. Grapnel spicules arranged around the apical actines of the atrial tetractines.	FIGURE 30. Leucandra rudifera (MNRJ30132) in SEM. (A–B) Cortical skeleton. A. Trichoxeas and cortical microdiactines lying on the surface. B. Cortical microdiactines protruding through the surface. (C–F) Atrial skeleton. C. Mesh of grapnel spicules covering the atrial tetractines. D. Group of atrial grapnel spicules. E. Mesh of grapnel spicules and apical actines of the atrial tetractines. F. Grapnel spicules arranged around the apical actines of the atrial tetractines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE588333EAF575337E56610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017630/files/figure.png	https://doi.org/10.5281/zenodo.17017630	FIGURE 31. Leucandra rudifera (MNRJ30132). A. Diactines. B. Cortical triactines. C. Cortical tetractine. D. Subcortical triactine. E. Choanosomal triactines. F. Triactines and tetractines of the canals. G. Atrial tetractine.	FIGURE 31. Leucandra rudifera (MNRJ30132). A. Diactines. B. Cortical triactines. C. Cortical tetractine. D. Subcortical triactine. E. Choanosomal triactines. F. Triactines and tetractines of the canals. G. Atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFE588333EAF575337E56610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017634/files/figure.png	https://doi.org/10.5281/zenodo.17017634	FIGURE 32. Leucandra rudifera (MNRJ30132). A. Cortical microdiactines. B. Grapnel spicule.	FIGURE 32. Leucandra rudifera (MNRJ30132). A. Cortical microdiactines. B. Grapnel spicule.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFEC884F3EAF542733DD60CC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017638/files/figure.png	https://doi.org/10.5281/zenodo.17017638	FIGURE 33. Leucandra serrata. A. Specimen MNRJ2993 in vivo. B. Preserved specimen MNRJ2993. C. Preserved specimen MNRJ2979, showing the oscular tube (arrow) and tangential diactines on the surface (arrowhead). D. Longitudinal view of the body wall and atrium, showing tufts of diactines protruding through conules on the surface and the openings of the exhalant canals in the atrial surface.	FIGURE 33. Leucandra serrata. A. Specimen MNRJ2993 in vivo. B. Preserved specimen MNRJ2993. C. Preserved specimen MNRJ2979, showing the oscular tube (arrow) and tangential diactines on the surface (arrowhead). D. Longitudinal view of the body wall and atrium, showing tufts of diactines protruding through conules on the surface and the openings of the exhalant canals in the atrial surface.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFEC884F3EAF542733DD60CC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017642/files/figure.png	https://doi.org/10.5281/zenodo.17017642	FIGURE 34. Leucandra serrata (MNRJ2979 and MNRJ2993). A. Tangential section of the cortex. B. Microdiactine in the cortex (arrowhead 1 points to the distal tip and arrowhead 2 points to the proximal tip), with detail of its jagged distal tip in the inset. C. Cross section of the body wall (arrowheads point to the conules with tufts of diactines). D. Subcortical triactines (arrowhead). E. Choanosomal canal. F. Tangential section of the atrium. All skeleton pictures were taken from the specimen MNRJ2979, except for B (taken from MNRJ2993). cx = cortex, at = atrium, c = choanosomal canal.	FIGURE 34. Leucandra serrata (MNRJ2979 and MNRJ2993). A. Tangential section of the cortex. B. Microdiactine in the cortex (arrowhead 1 points to the distal tip and arrowhead 2 points to the proximal tip), with detail of its jagged distal tip in the inset. C. Cross section of the body wall (arrowheads point to the conules with tufts of diactines). D. Subcortical triactines (arrowhead). E. Choanosomal canal. F. Tangential section of the atrium. All skeleton pictures were taken from the specimen MNRJ2979, except for B (taken from MNRJ2993). cx = cortex, at = atrium, c = choanosomal canal.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFFEC884F3EAF542733DD60CC.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017655/files/figure.png	https://doi.org/10.5281/zenodo.17017655	FIGURE 35. Leucandra serrata (MNRJ2979). A. Diactine. B. Cortical triactines. C. Subcortical triactines. D. Choanosomal triactines. E. Tetractine of the canals. F. Atrial triactine. G. Atrial tetractine.	FIGURE 35. Leucandra serrata (MNRJ2979). A. Diactine. B. Cortical triactines. C. Subcortical triactines. D. Choanosomal triactines. E. Tetractine of the canals. F. Atrial triactine. G. Atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9188493EAF54CE33BB6634.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017665/files/figure.png	https://doi.org/10.5281/zenodo.17017665	FIGURE 36. Sycettusa flamma (MNRJ2040).A. Preserved specimen. B. Cross section of the body wall. C. Tangential section of the cortex. D. Cortical and subcortical regions, with pseudosagittal triactines (white arrowhead), trichoxeas in the cortex (black arrowhead) and the lanceolate distal tip of a diactine in the inset. E. Subatrial and atrial regions, showing subatrial triactines and tetractine (arrowhead), and the apical actine of an atrial tetractine with trichoxeas in the inset. F. Tangential section of the atrium (arrowheads point to triactines). cx = cortex, at = atrium, asterisks = inhalant and exhalant canals.	FIGURE 36. Sycettusa flamma (MNRJ2040).A. Preserved specimen. B. Cross section of the body wall. C. Tangential section of the cortex. D. Cortical and subcortical regions, with pseudosagittal triactines (white arrowhead), trichoxeas in the cortex (black arrowhead) and the lanceolate distal tip of a diactine in the inset. E. Subatrial and atrial regions, showing subatrial triactines and tetractine (arrowhead), and the apical actine of an atrial tetractine with trichoxeas in the inset. F. Tangential section of the atrium (arrowheads point to triactines). cx = cortex, at = atrium, asterisks = inhalant and exhalant canals.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9188493EAF54CE33BB6634.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017671/files/figure.png	https://doi.org/10.5281/zenodo.17017671	FIGURE 37. Sycettusa flamma (MNRJ30130). A. Preserved specimen. B. Oscular skeleton. C, D. Cross sections of the body wall. cx = cortex, at = atrium.	FIGURE 37. Sycettusa flamma (MNRJ30130). A. Preserved specimen. B. Oscular skeleton. C, D. Cross sections of the body wall. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9188493EAF54CE33BB6634.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017675/files/figure.png	https://doi.org/10.5281/zenodo.17017675	FIGURE 38. Sycettusa flamma (MNRJ2040).A. Diactine.B. Cortical triactines. C. Subcortical triactines. D. Subatrial triactines. E. Subatrial tetractine. F. Atrial tetractines. ap = apical actine.	FIGURE 38. Sycettusa flamma (MNRJ2040).A. Diactine.B. Cortical triactines. C. Subcortical triactines. D. Subatrial triactines. E. Subatrial tetractine. F. Atrial tetractines. ap = apical actine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9788463EAF548033E666D8.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017677/files/figure.png	https://doi.org/10.5281/zenodo.17017677	FIGURE 39. Sycettusa hastifera (UFRJPOR9146). A. Preserved specimen. B. Cross section of the body wall. (C–G) Spicules. C. Diactine. D. Cortical triactine. E. Subcortical triactine. F. Subatrial triactine. G. Atrial triactine. cx = cortex, at = atrium.	FIGURE 39. Sycettusa hastifera (UFRJPOR9146). A. Preserved specimen. B. Cross section of the body wall. (C–G) Spicules. C. Diactine. D. Cortical triactine. E. Subcortical triactine. F. Subatrial triactine. G. Atrial triactine. cx = cortex, at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9988433EAF53CE36A96514.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017679/files/figure.png	https://doi.org/10.5281/zenodo.17017679	FIGURE 40: Vosmaeropsis recruta (UFRJPOR6996).A. Preserved specimen. B. Oscular skeleton. C. Cross section of the body wall. D. Cortical and subcortical skeletons (arrowhead points to a subcortical triactine). E. Choanosomal triactine. F. Subatrial triactine. G. Atrial skeleton (arrowhead points to a triactine). cx = cortex, at = atrium, ec = exhalant canal, asterisks = lacunae.	FIGURE 40: Vosmaeropsis recruta (UFRJPOR6996).A. Preserved specimen. B. Oscular skeleton. C. Cross section of the body wall. D. Cortical and subcortical skeletons (arrowhead points to a subcortical triactine). E. Choanosomal triactine. F. Subatrial triactine. G. Atrial skeleton (arrowhead points to a triactine). cx = cortex, at = atrium, ec = exhalant canal, asterisks = lacunae.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9988433EAF53CE36A96514.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017683/files/figure.png	https://doi.org/10.5281/zenodo.17017683	FIGURE 41. Vosmaeropsis recruta (UFRJPOR6996). A. Diactine. B. Lanceolate tip of the diactine. C. Smaller diactine. D. Cortical triactine. E. Subcortical triactines. F. Choanosomal triactines. G. Subatrial triactines. H. Atrial triactines. I. Atrial tetractines.	FIGURE 41. Vosmaeropsis recruta (UFRJPOR6996). A. Diactine. B. Lanceolate tip of the diactine. C. Smaller diactine. D. Cortical triactine. E. Subcortical triactines. F. Choanosomal triactines. G. Subatrial triactines. H. Atrial triactines. I. Atrial tetractines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9C885E3EAF57F335166610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017685/files/figure.png	https://doi.org/10.5281/zenodo.17017685	FIGURE 42. Leucosolenia sebastianensis sp. nov. (MNRJ2975—Holotype).A. Specimen in vivo. B. Preserved specimen.	FIGURE 42. Leucosolenia sebastianensis sp. nov. (MNRJ2975—Holotype).A. Specimen in vivo. B. Preserved specimen.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9C885E3EAF57F335166610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017689/files/figure.png	https://doi.org/10.5281/zenodo.17017689	FIGURE 43. Leucosolenia sebastianensis sp. nov. (MNRJ2975—Holotype). A. Skeleton of the oscular margin. B. Small diactines on the tubes surface. C, D. Large diactines protruding through the external surface of the tubes. E. Skeleton of the tubes near the oscula. F. Skeleton of a basal tube.	FIGURE 43. Leucosolenia sebastianensis sp. nov. (MNRJ2975—Holotype). A. Skeleton of the oscular margin. B. Small diactines on the tubes surface. C, D. Large diactines protruding through the external surface of the tubes. E. Skeleton of the tubes near the oscula. F. Skeleton of a basal tube.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF9C885E3EAF57F335166610.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017697/files/figure.png	https://doi.org/10.5281/zenodo.17017697	FIGURE 44. Leucosolenia sebastianensis sp. nov. (MNRJ2975—Holotype) in SEM.A, B. Small diactines on the tubes surface. C. Large diactine. D. Small diactines, with detail of the spines on the distal tip. E. Triactines. F. Tetractines.	FIGURE 44. Leucosolenia sebastianensis sp. nov. (MNRJ2975—Holotype) in SEM.A, B. Small diactines on the tubes surface. C. Large diactine. D. Small diactines, with detail of the spines on the distal tip. E. Triactines. F. Tetractines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF81885A3EAF538837EE656C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017701/files/figure.png	https://doi.org/10.5281/zenodo.17017701	FIGURE 45. Sycon caissarum sp. nov. (UFRJPOR7038—Holotype). A. Preserved specimen. B. Oscular skeleton. C. Cross section of the body wall. D. Skeleton of the distal cones, with bent unpaired actines of the triactines in the inset. E. Tubar triactines. F. Subatrial (arrowhead) and atrial skeletons. G. Tangential section of the atrium. dc = distal cones; at = atrium.	FIGURE 45. Sycon caissarum sp. nov. (UFRJPOR7038—Holotype). A. Preserved specimen. B. Oscular skeleton. C. Cross section of the body wall. D. Skeleton of the distal cones, with bent unpaired actines of the triactines in the inset. E. Tubar triactines. F. Subatrial (arrowhead) and atrial skeletons. G. Tangential section of the atrium. dc = distal cones; at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF81885A3EAF538837EE656C.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017705/files/figure.png	https://doi.org/10.5281/zenodo.17017705	FIGURE 46. Sycon caissarum sp. nov. (UFRJPOR7038—Holotype). A. Diactine. B. Triactines of the distal cones. C. Tubar triactines. D. Subatrial triactine. E. Atrial triactines. F. Atrial tetractine.	FIGURE 46. Sycon caissarum sp. nov. (UFRJPOR7038—Holotype). A. Diactine. B. Triactines of the distal cones. C. Tubar triactines. D. Subatrial triactine. E. Atrial triactines. F. Atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF8588563EAF505A36316082.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017709/files/figure.png	https://doi.org/10.5281/zenodo.17017709	FIGURE 47. Sycon crassapicale sp. nov. A, B. Preserved specimens UFRJPOR7046 (Holotype) and MNRJ2976 (Paratype), respectively. C–G. UFRJPOR7046 (Holotype). C. Oscular skeleton (detail of the spicules in the inset). D. Cross section of the body wall. E. Distal cones. F. Tubar (arrowhead 1) and subatrial (arrowhead 2) skeletons. G. Tangential section of the atrium. dc = distal cones; at = atrium.	FIGURE 47. Sycon crassapicale sp. nov. A, B. Preserved specimens UFRJPOR7046 (Holotype) and MNRJ2976 (Paratype), respectively. C–G. UFRJPOR7046 (Holotype). C. Oscular skeleton (detail of the spicules in the inset). D. Cross section of the body wall. E. Distal cones. F. Tubar (arrowhead 1) and subatrial (arrowhead 2) skeletons. G. Tangential section of the atrium. dc = distal cones; at = atrium.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF8588563EAF505A36316082.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017713/files/figure.png	https://doi.org/10.5281/zenodo.17017713	FIGURE 48. Skeleton of Sycon crassapicale sp. nov. (UFRJPOR7046—Holotype) in SEM.A. Tubes and part of the atrium. B. Distal cones. C. Tangential section of the atrial skeleton. D. Detail of the apical actines of the atrial tetractines.	FIGURE 48. Skeleton of Sycon crassapicale sp. nov. (UFRJPOR7046—Holotype) in SEM.A. Tubes and part of the atrium. B. Distal cones. C. Tangential section of the atrial skeleton. D. Detail of the apical actines of the atrial tetractines.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF8588563EAF505A36316082.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017717/files/figure.png	https://doi.org/10.5281/zenodo.17017717	FIGURE 49. Sycon crassapicale sp. nov. (UFRJPOR7046—Holotype). A. Fusiform diactines. B. Triactine of the distal cone. C. Tubar triactines. D. Subatrial triactine. E. Atrial triactines. F. Atrial tetractine. G. Apical actine of an atrial tetractine.	FIGURE 49. Sycon crassapicale sp. nov. (UFRJPOR7046—Holotype). A. Fusiform diactines. B. Triactine of the distal cone. C. Tubar triactines. D. Subatrial triactine. E. Atrial triactines. F. Atrial tetractine. G. Apical actine of an atrial tetractine.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
03F4630BFF8588563EAF505A36316082.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/17017489/files/figure.png	https://doi.org/10.5281/zenodo.17017489	FIGURE 2. Maximum likelihood phylogenetic tree based on C-LSU sequences of the subclass Calcaronea. Tree rooted with Leucosolenia complicata. Species sequences generated in this work are in bold, and the clades containing them are highlighted in different colours. Support values (Bootstrap> 70%) are shown at the nodes. H = Holotype, P = Paratype, SP = São Paulo State, SC = Santa Catarina State, ES = Espírito Santo State.	FIGURE 2. Maximum likelihood phylogenetic tree based on C-LSU sequences of the subclass Calcaronea. Tree rooted with Leucosolenia complicata. Species sequences generated in this work are in bold, and the clades containing them are highlighted in different colours. Support values (Bootstrap> 70%) are shown at the nodes. H = Holotype, P = Paratype, SP = São Paulo State, SC = Santa Catarina State, ES = Espírito Santo State.	2025-09-01	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle		Zenodo	biologists	Pereira, Sara Emilly;Azevedo, Fernanda;Hajdu, Eduardo;Cavalcanti, Fernanda F.;Klautau, Michelle			
