FIGURE 8 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 8: Nasal curtain and mouth (closed) of holotype of Plesiotrygon nana sp. nov., showing triangular mark on nasal curtain formed by junction of suborbital and prenasal canals of ventral lateral-line system, tubular narial grooves, and labial folds (MUSM 20328, 243 mm DL, 247 mm DW). Distance between nostrils = 1.5 cm.