iwamae, Plesiotrygon Rosa [R. S.], Castello [H. P.] & Thorson [T. B.] 1987:450, Figs. 1-10 [Copeia 1987 (no. 2); ref. 5974] Rio Solimões, above Tefé, 3°22'S, 64°43'W, Amazonas, Brazil. Holotype: MZUSP 10153. Paratypes: FMNH 94500 (1); MNRJ 573 (1); MZUSP 14789 (1); USNM 258298 (1); ZMH 10343 (1). Type catalog: Wilkens & Dohse 1993:410 [ref. 21161], Thiel et al. 2009:26 [ref. 30918], Lima et al. 2023:325 [ref. 40221]. •Valid as Plesiotrygon iwamae Rosa, Castello & Thorson 1987 -- (Compagno 1999:495 [ref. 25589], Carvalho et al. in Reis et al. 2003:23 [ref. 27061], Almeida et al. 2008:85 [ref. 40894], Carvalho & Lovejoy 2011:19, 45 [ref. 31182], Carvalho et al. 2011:27 [ref. 31264], Carvalho & Ragno 2011:121 [ref. 31309], Lasso et al. 2011:174 [ref. 31491], Barriga Salazar 2014:104 [ref. 35745], Weigmann 2016:154 [ref. 34211], Carvalho 2016:625 [ref. 34997], DoNascimiento et al. 2017:33 [ref. 35633], Carvalho-Filho 2023:321 [ref. 40480]). Current status: Valid as Plesiotrygon iwamae Rosa, Castello & Thorson 1987. Potamotrygonidae: Potamotrygoninae. Distribution: South America: upper and lower Amazon River basin (Brazil, Colombia and Ecuador). Habitat: freshwater.