FIGURE 15 in Potamotrygon tigrina, a new species of freshwater stingray from the upper Amazon basin, closely related to Potamotrygon schroederi Fernandez-Yépez, 1958 (Chondrichthyes: Potamotrygonidae)

FIGURE 15. Morphological details of Potamotrygon schroederi from Rio Negro, Brazil. A) Dorsal anterior head and snout region (MZUSP 108453). B) Ventral snout and nasoral region (MZUSP 108452). C) Dorsal view of pelvic fin (MZUSP 108452). D) Ventral view of pelvis fins (MZUSP 108455). E) Dorsal view of posterior disc and tail base region in freshly captured adult female specimen (depicted Figure 12A; specimen not preserved). F) Detail of lateral disc color in freshly captured adult female specimen (depicted in Figure 12D; specimen not preserved). Scale bars in A, B, E and F = 5 cm; in C and D = 2.5 cm