FIGURE 24 in An Unusual, Dwarf New Species Of Neotropical Freshwater Stingray, Plesiotrygon Nana Sp. Nov., From The Upper And Mid Amazon Basin: The Second Species Of Plesiotrygon (Chondrichthyes: Potamotrygonidae)

FIGURE 24: Skeleton and dermal covering in paratype of Plesiotrygon iwamae (FMNH 94500, adult female, 565 mm DL). A) Splanchnocranium and scapular region. B) Close-up of angular cartilage. C) Base of tail region showing arrangement of dorsal spines and denticles. Abbreviations: AC, angular cartilage; AOC, antorbital cartilage; HYO, hyomandibula; MC, Meckel's cartilage; MES, mesopterygium; NA, nasal aperture; POP, postorbital process; PQ, palatoquadrate; PRO, propterygium; SC, spiraclular cartilage (anterior); SCP, scapulocoracoid.