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FIGURE 41 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 41 | Dorsal view of dermal denticles in central disc of Paratrygon aiereba (SEM images). A. INPA 1331, juvenile female, 255 mm DW, from Solimões river. B. MUSM 47105, juvenile male, 214 mm DW, from Uribamba river. C. MZUSP 117831, neonate female, 200 mm DW, from Nanay river.
FIGURE 45 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 45 | Details of dermal denticles and thorns in the tail basis of Paratrygon aiereba, MZUSP 103896 (SEM images). A. dermal denticles and one thorn (right superior corner) in the tail basis of MZUSP 103896. B. detail of pointed dermal denticles of left superior corner in the Fig. 45a. image. ccp = central coronal plate, lcr = lateral coronal ridge.
FIGURE 43 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 43 | Dermal denticles in the disc margins of Paratrygon aiereba, MZUSP 103896 (SEM images). A. dorsal view of anterior margin denticles. B. dorsal view of lateral margin denticles. C. lateral view of posterior margins denticles.
FIGURE 44 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 44 | Details of dermal denticles in the disc margins of Paratrygon aiereba, MZUSP 103896 (SEM images). A. dorsal view of anterior margin denticles. B. dorsal and C. lateral detail of lateral margin denticle. D. lateral view of a posterior margin denticle. E. dorsal and F. lateral detail of a thorn in the posterior margin of disc. bp = basal plate, ccp = central coronal plate, cr = crown, lcr = lateral coronal ridge.
FIGURE 46 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 46 | Dorsal view of dorsal and lateral rows of thorns in Paratrygon aiereba. A. MZUSP 117155 (neotype). B. MUSM 9423, juvenile male, 428 mm DW, from Las Piedras river. C. IAvH-P 11927. D. MUSM 1389, juvenile male, 207 mm DW. E. MZUSP 14772, juvenile female, 221 mm DW, from Ucayali river. F. MZUSP 101015.
FIGURE 47 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 47 | Dorsal view of caudal stings of Paratrygon aiereba. A. MPEG uncatalogued, adult male, 681 mm DW. B. MZUSP 103907, adult male, 606 mm DW, from Tapajós river. C. IAvH-P 11894, juvenile female, 472 mm DW. D. IAvH-P 11937, juvenile male, 280 mm DW, from Putumayo river. E. MNHN A.2289. F. USNM 264005, juvenile male, 184 mm DW, from Tambopata river.
FIGURE 34 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 34 | Paratrygon aiereba, dorsal view of the specimen MZUSP 104896, adult female, 560 mm DW, from Javari river. Note the concavity in the anterior margin of the disc.
FIGURE 31 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 31 | Radiograph of pelvic girdle of Paratrygon parvaspina, MZUSP 117836 (paratype), upper view. Abbreviations see Fig. 17. Arrow indicates to the anterior portion of specimen.
FIGURE 29 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 29 | Radiograph of scapulocoracoid of Paratrygon parvaspina, MZUSP 117836 (paratype), upper view. Abbreviations see Fig. 15. Arrow indicates to the anterior portion of specimen.
FIGURE 23 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 23 | Dorsal view and details of central disc dermal denticles of Paratrygon parvaspina, MZUSP 117836 (paratype) (SEM images). A. and B. dorsal view of some denticles. C. dorsal and D. lateral details of central dermal denticles. ccp = central coronal plate, lcr = lateral coronal ridge.
FIGURE 22 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 22 | Dermal denticles on the dorsal disc and tail of Paratrygon parvaspina, IAvH-P 12447 (holotype). A. distribution of dermal denticles. B. detail of some thorns with tubercular base on the posterior margin of the disc and tail's basis. C. detail of basal plates of these tubercular spines. bp = basal plate.
FIGURE 20 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 20 | Paratypes of Paratrygon parvaspina. IAvH-P 12446, juvenile male, 212 mm DW, from Tomo river. A. dorsal and B. ventral views. MZUSP 117836, juvenile female, 266 mm DW, from Orinoco river. C. dorsal and D. ventral views.
FIGURE 24 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 24 | Dorsal and lateral rows of thorns in Paratrygon parvaspina. A. and B. IAvH-P 12447 (holotype). C. IAvH-P 4684. D. detail of dorsal pointed spines on the tail of IAvH-P 12441 (paratype). E. IAvH-P 12446 (paratype). F. MZUSP 117836 (paratype).
FIGURE 42 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 42 | Details of dermal denticles in central disc of Paratrygon aiereba (SEM images) in dorsal view. A. MZUSP 103896, adult male, 508 mm DW, from Tapajós river. B. and C. INPA 1331. D. and E. MUSM 47105. F. MZUSP 117831. ccp = central coronal plate, lcr = lateral coronal ridge.
FIGURE 19 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 19 | Holotype and paratype of Paratrygon parvaspina. Holotype, IAvH-P 12447, adult female, 450 mm DW, from Bita river. A. dorsal and B. ventral views. Paratype, IAvH-P 12441, juvenile female, 255 mm DW, from Tomo river. C. dorsal and D. ventral views.
FIGURE 18 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 18 | Distribution of Paratrygon orinocensis throughout Orinoco basin. This species occurs in the mid and lower portion of Orinoco river, and mid portion of Apure river. See Discussion to a more complete discussion about its distribution. Star = holotype specimen (IAvH-P 11939) locality.
FIGURE 33 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 33 | Neotype of Paratrygon aiereba, MZUSP 117155, adult male, 603 mm DW, from Marajó bay. A. dorsal and B. ventral views.
FIGURE 17 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 17 | Radiographs of pelvic girdle of Paratrygon orinocensis, upper views. A. USNM 233944b (paratype). B. MZUSP 117220 (paratype). IP = iliac process, ISP = ischial process, LPP = lateral prepelvic process, OF = obturator foramen, PB = puboischiadic bar. Arrow indicates to the anterior portion of specimens.
FIGURE 21 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 21 | Lateral view of spiracles and spiracles process of Paratrygon parvaspina. A. IAvH-P 4684, adult female, 345 mm DW, from Tomo river. B. IAvH-P 12441 (paratype). C. IAvH-P 12446 (paratype). D. MZUSP 117836 (paratype).
FIGURE 15 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba
FIGURE 15 | Radiographs of scapulocoracoid of Paratrygon orinocensis, upper views. A. USNM 233944b (paratype). B. MZUSP 117220 (paratype). CB = coracoid bar, DLC = dorsolateral crest, MSC = mesocondyle, MTC = metacondyle, PC = procondyle, SCP = scapular process. Arrow indicates to the anterior portion of specimens.
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International Brain Laboratory public data
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OpenNeuro
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