FIGURE 20 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 20: Left posterolateral disc region in Plesiotrygon iwamae, showing some of the variation in dorsal disc color present in specimens examined. A) MZUSP 59896 (Rio Solimões, 470 mm DL, 460 mm DW). B) MZUSP 108706 (Rio Pará, 350 mm DL, 355 mm DW). C) MZUSP 108771 (Rio Pará, 292 mm DL, 294 mm DW). D) MZUSP 108772 (Rio Pará, 298 mm DL, 300 mm DW). E) 108776 (Rio Pará, 396 mm DL, 398 mm DW). F) MZUSP 108775 (Rio Pará, 452 mm DL, 442 mm DW).