mulleri, Trygon (Taenura) Castelnau [F. L.] 1855:102, Pl. 48 (fig. 2) [Animaux nouveaux or rares v. 2; ref. 766] Rio Crixas and Rio Araguay, Brazil. Syntypes: MNHN 0000-2354 (1, poor condition) Rio Araguay, Brazil. Type catalog: Bertin 1939:89 [ref. 20739], Séret & McEachran 1987:21 [ref. 9312]. Name listed as Taenura mulleri on figure caption. Castex 1964:21 [ref. 20924] referred to MNHN 2354 as holotype (poor condition) but it may be a syntype. •Synonym of Potamotrygon motoro (Müller & Henle 1841) -- (Castex 1964:20 [ref. 20924], Carvalho et al. in Reis et al. 2003:24 [ref. 27061], Litz & Koerber 2014:5 [ref. 33622], Mirande & Koerber 2015:8 [ref. 35117], Weigmann 2016:156 [ref. 34211], Carvalho 2016:561 [ref. 34666], Koerber et al. 2017:10 [ref. 35267]). Current status: Synonym of Potamotrygon motoro (Müller & Henle 1841). Potamotrygonidae: Potamotrygoninae. Habitat: freshwater.