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FIGURE 1 in A new species of freshwater turtle of the genus Elseya (Testudinata: Pleurodira: Chelidae) from the Northern Territory of Australia
FIGURE 1. Adult female Yellow Bellied Snapping Turtle (Elseya (Elseya) flaviventralis) from Pul Pul Billabong, Kakadu National Park, Northern Territory (13° 34' S, 132° 35' E).
FIGURE 4 in A new species of freshwater turtle of the genus Elseya (Testudinata: Pleurodira: Chelidae) from the Northern Territory of Australia
FIGURE 4. Distribution of extant species in the genus Elseya. The ranges of Elseya rhodini and Elseya branderhorsti overlap to the west and including the Fly River drainage. Type localities are shown as red dots, with the exception of E. branderhorsti (green dot). The type locality for E. lavarackorum is outside range because it was described from a fossil from Riversleigh now outside its present range. E. rhodini occupies small streams and tributaries; E. branderhorsti occupies tidal regions, lower reaches and lakes, so the two are seldom found in microsympatry.
FIGURE 3 in A new species of freshwater turtle of the genus Elseya (Testudinata: Pleurodira: Chelidae) from the Northern Territory of Australia
FIGURE 3. Dorsal and lateral views of the Paratype (Allotype) of Elseya (Elseya) flaviventralis NTM 13985, adult male from Pul Pul Billabong, South Alligator River Drainage, Northern Territory, Australia. 13° 34' S 132° 35' E. Scale 10 mm. The plastron has been disarticulated.
FIGURE 24 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 24. Morphological details of Potamotrygon leopoldi (MZUSP 35986). A) Lower jaw region showing both angular cartilages; B) Close-up of multiple rows of closely-packed dorsal tail thorns; C) Tail region showing distribution of dorsal tail thorns. Abbreviations: aac, anterior angular cartilage; hyo, hyomandibula; Mc, Meckel's cartilage; pac, posterior angular cartilage; prp, preorbital process.
FIGURE 19 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 19. Morphological details of Potamotrygon henlei (MZUSP 14768). A) Jaw corner, right side, showing two angular cartilages; B) Tail region showing distribution and shape of dorsal tail thorns. Abbreviations: aac, anterior angular cartilage; hyo, hyomandibula; Mc, Meckel's cartilage; pac, posterior angular cartilage.
FIGURE 18. Potamotrygon henlei. A in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 18. Potamotrygon henlei. A) Live adult specimen; B) Same specimen as in A when juvenile (note color change from B to A); C) Neonate, two days old, about 17 cm DW (all courtesy of R. Hardwick).
FIGURE 17. Potamotrygon henlei. A in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 17. Potamotrygon henlei. A) MZUSP 104435, adult male, 755 mm TL, 479 mm DL, 446 mm DW, mid rio Araguaia, Caseara, Tocantins state; B) Ventral view of same; C) Dorsal view of juvenile male from Marabá, lower rio Tocantins, captured for the aquarium trade; D) Ventral view of same (C and D courtesy of G. Rincon).
FIGURE 15 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 14 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 22. Potamotrygon leopoldi. A in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 22. Potamotrygon leopoldi. A) Freshly captured adult male specimen, rio Xingu (courtesy of N.L. Chao); B) Holotype of P. leopoldi (IRSNB 23936, 679 mm TL, 461 mm DL, 428 mm DW, from rio Xingu, near rio Manissauá-Miçu, Mato Grosso, Brazil); C) Juvenile female specimen (MZUSP 35986, 346 mm TL, 221 mm DL, 211 mm DW, rio Fresco, São Félix do Xingu, Pará state).
FIGURE 10 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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; b1, basal (intermediate) segment 1; b2, basal (intermediate) segment 2; bp, basipterygium; cr, cartilaginous rod; dm, dorsal marginal cartilage; dt2, dorsal terminal 2 cartilage; vm, ventral marginal cartilage; vt, ventral terminal cartilage.
FIGURE 11 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 12 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 9 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 23 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 23. Live specimens of Potamotrygon leopoldi. A) Adult female; B) Adult male; C) Neonates, about two days old (all bred from specimens from São Félix do Xingu, Pará state; images courtesy of R. Hardwick).
FIGURE 13 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 21 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
FIGURE 21. Dermal denticles of (A) Potamotygon henlei (MZUSP uncat.) and (B) P. leopoldi (MZUSP 116090), from anterior middisc, under SEM magnification.
FIGURE 16 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 7 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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 8 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)
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.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.