FIGURE 15 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 15: Skeletal aspects of holotype of Plesiotrygon nana sp. nov. (MUSM 20328, adult male, 1024 mm TL, 243 mm DL, 247 mm DW). A) Articulation between pectoral basal elements and shoulder girdle, showing pectoral radials and lateral aspect of scapulocoracoid. B) Detail of propterygium, neurocranium, and mandibular and hyoid arches in ventral view. Abbreviations: AC, angular cartilage; AOC, antorbital cartilage; HYO, hyomandibula; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; NA, nasal aperture; POP, postorbital process; PQ, palatoquadrate; PR, pectoral radials; PRO, propterygium; SCP, scapulocoracoid.