taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261300/files/figure.png	https://doi.org/10.5281/zenodo.261300	FIGURE 1. Dorsal (A) and ventral (B) views of holotype of Potamotrygon rex, sp. nov. (adult female, MZUSP 120371, 1110 mm TL, 750 mm DL, 690 mm DW).	FIGURE 1. Dorsal (A) and ventral (B) views of holotype of Potamotrygon rex, sp. nov. (adult female, MZUSP 120371, 1110 mm TL, 750 mm DL, 690 mm DW).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261301/files/figure.png	https://doi.org/10.5281/zenodo.261301	FIGURE 2. Dorsal (A) and ventral (B) views of of Potamotrygon rex, sp. nov. (adult male, paratype, MZUSP 120373, 825 mm TL, 526 mm DL, 475 mm DW).	FIGURE 2. Dorsal (A) and ventral (B) views of of Potamotrygon rex, sp. nov. (adult male, paratype, MZUSP 120373, 825 mm TL, 526 mm DL, 475 mm DW).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261302/files/figure.png	https://doi.org/10.5281/zenodo.261302	FIGURE 3. Dorsal (A) and ventral (B) views of Potamotrygon rex, sp. nov. (paratype, UNT 7146, 815 mm TL, 535 mm DL, 480 mm DW).	FIGURE 3. Dorsal (A) and ventral (B) views of Potamotrygon rex, sp. nov. (paratype, UNT 7146, 815 mm TL, 535 mm DL, 480 mm DW).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261303/files/figure.png	https://doi.org/10.5281/zenodo.261303	FIGURE 4. Dorsal (A) and ventral (B) views of Potamotrygon rex, sp. nov. (paratype, UNT 7144, 825 mm TL, 520 mm DL, 465 mm DW).	FIGURE 4. Dorsal (A) and ventral (B) views of Potamotrygon rex, sp. nov. (paratype, UNT 7144, 825 mm TL, 520 mm DL, 465 mm DW).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261304/files/figure.png	https://doi.org/10.5281/zenodo.261304	FIGURE 5. Dorsal (A) and ventral (B) views of juvenile specimen of Potamotrygon rex, sp. nov. (MZUSP 120352, 445 mm TL, 290 mm DL, 275 mm DW).	FIGURE 5. Dorsal (A) and ventral (B) views of juvenile specimen of Potamotrygon rex, sp. nov. (MZUSP 120352, 445 mm TL, 290 mm DL, 275 mm DW).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261305/files/figure.png	https://doi.org/10.5281/zenodo.261305	FIGURE 6. Morphological details of Potamotrygon rex, sp. nov. A) Dorsal view of snout region (paratype, MZUSP 120373); B) Lateral view of eye and spiracle (paratype, MZUSP 120373); C) Close-up of nasoral region (holotype, MZUSP 120371); D) Mouth of adult female showing external tooth rows (holotype, MZUSP 120371); E) Mouth of adult male showing external tooth rows (paratype, MZUSP 120373).	FIGURE 6. Morphological details of Potamotrygon rex, sp. nov. A) Dorsal view of snout region (paratype, MZUSP 120373); B) Lateral view of eye and spiracle (paratype, MZUSP 120373); C) Close-up of nasoral region (holotype, MZUSP 120371); D) Mouth of adult female showing external tooth rows (holotype, MZUSP 120371); E) Mouth of adult male showing external tooth rows (paratype, MZUSP 120373).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261306/files/figure.png	https://doi.org/10.5281/zenodo.261306	FIGURE 7. Dorsal view of posterolateral disc region in Potamotrygon rex, sp. nov., showing variation in dorsal color pattern. A) UNT 7137; B) UNT 7119; C) MZUSP 120365; D) MZUSP 120362; E) UNT 7111; F) UNT 7129; G) MZUSP 120373; H) MZUSP 120371 (holotype); I) MZUSP 120370.	FIGURE 7. Dorsal view of posterolateral disc region in Potamotrygon rex, sp. nov., showing variation in dorsal color pattern. A) UNT 7137; B) UNT 7119; C) MZUSP 120365; D) MZUSP 120362; E) UNT 7111; F) UNT 7129; G) MZUSP 120373; H) MZUSP 120371 (holotype); I) MZUSP 120370.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261307/files/figure.png	https://doi.org/10.5281/zenodo.261307	FIGURE 8. Ventral disc in Potamotrygon rex, sp. nov., showing variation in ventral color pattern. A) MZUSP 120369; B) MZUSP 120368; C) MZUSP 120370; D) MZUSP 120367; E) UNT 7129; F) UNT 7143.	FIGURE 8. Ventral disc in Potamotrygon rex, sp. nov., showing variation in ventral color pattern. A) MZUSP 120369; B) MZUSP 120368; C) MZUSP 120370; D) MZUSP 120367; E) UNT 7129; F) UNT 7143.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261308/files/figure.png	https://doi.org/10.5281/zenodo.261308	FIGURE 9. Tail region in Potamotrygon rex, sp. nov., showing morphology and distribution of dorsal tail thorns. A, B) Holotype (MZUSP 120371); C) Paratype (MZUSP 120373).	FIGURE 9. Tail region in Potamotrygon rex, sp. nov., showing morphology and distribution of dorsal tail thorns. A, B) Holotype (MZUSP 120371); C) Paratype (MZUSP 120373).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261309/files/figure.png	https://doi.org/10.5281/zenodo.261309	FIGURE 10. Radiographs of tails of Potamotrygon rex, sp. nov., showing arangement of thorns and denticles. A) MZUSP 120354; B) MZUSP 120356. Abbreviations: at, accessory terminal cartilage; ax, axial cartilage; b 1, basal (intermediate) segment 1; b 2, basal (intermediate) segment 2; bp, basipterygium; cr, cartilaginous rod; dm, dorsal marginal cartilage; dt 2, dorsal terminal 2 cartilage; vm, ventral marginal cartilage; vt, ventral terminal cartilage.	FIGURE 10. Radiographs of tails of Potamotrygon rex, sp. nov., showing arangement of thorns and denticles. A) MZUSP 120354; B) MZUSP 120356. Abbreviations: at, accessory terminal cartilage; ax, axial cartilage; b 1, basal (intermediate) segment 1; b 2, basal (intermediate) segment 2; bp, basipterygium; cr, cartilaginous rod; dm, dorsal marginal cartilage; dt 2, dorsal terminal 2 cartilage; vm, ventral marginal cartilage; vt, ventral terminal cartilage.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261310/files/figure.png	https://doi.org/10.5281/zenodo.261310	FIGURE 11. SEM photos of dorsal denticles near anterior middisc in Potamotrygon rex, sp. nov. A) Lateral view; B) and C) Dorsal views (all MZUSP 120372, adult female, 1050 mm TL, 660 mm DL, 620 mm DW).	FIGURE 11. SEM photos of dorsal denticles near anterior middisc in Potamotrygon rex, sp. nov. A) Lateral view; B) and C) Dorsal views (all MZUSP 120372, adult female, 1050 mm TL, 660 mm DL, 620 mm DW).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261311/files/figure.png	https://doi.org/10.5281/zenodo.261311	FIGURE 12. Ventral lateral-line canals of Potamotrygon rex, sp. nov. (MZUSP 120352, 232 mm DW). Abbreviations: ast, anterior subpleural tubules; hyoc, hyomandibular canal; ioc, infraorbital canal; iol, infraorbital loop; jug, jugular canal; man, mandibular canal; pjl, posterior jugular loop; pnl, prenasal loop; pst, posterior subpleural tubule; sol, suborbital loop; spl, subpleural loop. The prenasal component of the nasal canal and the subrostral component of the supraorbital canal (both on the anterior snout) are not depicted for clarity.	FIGURE 12. Ventral lateral-line canals of Potamotrygon rex, sp. nov. (MZUSP 120352, 232 mm DW). Abbreviations: ast, anterior subpleural tubules; hyoc, hyomandibular canal; ioc, infraorbital canal; iol, infraorbital loop; jug, jugular canal; man, mandibular canal; pjl, posterior jugular loop; pnl, prenasal loop; pst, posterior subpleural tubule; sol, suborbital loop; spl, subpleural loop. The prenasal component of the nasal canal and the subrostral component of the supraorbital canal (both on the anterior snout) are not depicted for clarity.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261312/files/figure.png	https://doi.org/10.5281/zenodo.261312	FIGURE 13. Skeletal features of Potamotrygon rex, sp. nov., from radiographs, in dorsoventral view. A) Head region of MZUSP 120354; B) Head region of MZUSP 120353; C) Close-up of specimen in A; D) Base of tail region, showing distribution and development of dermal denticles and thorns (paratype, MZUSP 120369). Abbreviations: aac, anterior angular cartilage; ao, antorbital cartilage; apr, anterior segment of propterygium; fpf, frontoparietal fontanelle; hyo, hyomandibula; Mc, Meckel’s cartilage; no, nasal opening (nasal aperture); pac, posterior angular cartilage; pop, postorbital process; pq, palatoquadrate; pro, propterygium; prp, preorbital process; psc, prespiracular cartilage; sp, supraorbital process.	FIGURE 13. Skeletal features of Potamotrygon rex, sp. nov., from radiographs, in dorsoventral view. A) Head region of MZUSP 120354; B) Head region of MZUSP 120353; C) Close-up of specimen in A; D) Base of tail region, showing distribution and development of dermal denticles and thorns (paratype, MZUSP 120369). Abbreviations: aac, anterior angular cartilage; ao, antorbital cartilage; apr, anterior segment of propterygium; fpf, frontoparietal fontanelle; hyo, hyomandibula; Mc, Meckel’s cartilage; no, nasal opening (nasal aperture); pac, posterior angular cartilage; pop, postorbital process; pq, palatoquadrate; pro, propterygium; prp, preorbital process; psc, prespiracular cartilage; sp, supraorbital process.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261314/files/figure.png	https://doi.org/10.5281/zenodo.261314	FIGURE 15. Largest male (paratype, MZUSP 120373) on top of largest female (holotype, MZUSP 120371), demonstrating great size difference in Potamotrygon rex, sp. nov.	FIGURE 15. Largest male (paratype, MZUSP 120373) on top of largest female (holotype, MZUSP 120371), demonstrating great size difference in Potamotrygon rex, sp. nov.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261315/files/figure.png	https://doi.org/10.5281/zenodo.261315	FIGURE 16. Comparative morphology of teeth and upper (top) and lower (bottom) tooth plates among (A, B) Potamotrygon rex, sp. nov. (MZUSP 120357, 340 mm TL, 210 mm DL, 201 mm DW, juvenile male), (C, D) P. h e nl e i (MZUSP 14768, 309 mm TL, 182 mm DL, 178 mm DW, juvenile female), and (E, F) P. leopoldi (MZUSP 35986, 346 mm TL, 221 mm DL, 211 mm DW, juvenile female). Note that specimen of P. re x is greater in size but has smaller teeth and lower tooth band in comparison to specimen of P. henlei.	FIGURE 16. Comparative morphology of teeth and upper (top) and lower (bottom) tooth plates among (A, B) Potamotrygon rex, sp. nov. (MZUSP 120357, 340 mm TL, 210 mm DL, 201 mm DW, juvenile male), (C, D) P. h e nl e i (MZUSP 14768, 309 mm TL, 182 mm DL, 178 mm DW, juvenile female), and (E, F) P. leopoldi (MZUSP 35986, 346 mm TL, 221 mm DL, 211 mm DW, juvenile female). Note that specimen of P. re x is greater in size but has smaller teeth and lower tooth band in comparison to specimen of P. henlei.	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
03BD87DA3060FF9BFF54185AFCCA2CBD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/261313/files/figure.png	https://doi.org/10.5281/zenodo.261313	FIGURE 14. Map showing distribution of Potamotrygon rex, sp. nov., in the middle and upper rio Tocantins. Yellow star: holotype; red circles: other specimens examined (more than one specimen may be represented per circle).	FIGURE 14. Map showing distribution of Potamotrygon rex, sp. nov., in the middle and upper rio Tocantins. Yellow star: holotype; red circles: other specimens examined (more than one specimen may be represented per circle).	2016-12-31	De Carvalho, Marcelo R.		Zenodo	biologists	De Carvalho, Marcelo R.			
