adamastor, Potamotrygon Fontenelle [J. P.] & Carvalho [M. R. de] 2017:22, Figs. 15-23, 42C [Zootaxa 4310 (no. 1); ref. 35537] Rio Urariquera, rio Branco basin, municipal district of Boa Vista, upper Amazon Basin, state of Roraima, Brazil, 3°22'51.9594''N, 60°35'44.1594''W. Holotype: MZUSP 104662. Paratype: MZUSP 10464 (1). Plus non-type material. Type catalog: Lima et al. 2023:310 [ref. 40221]. •Valid as Potamotrygon adamastor Fontenelle & Carvalho 2017 -- (Taphorn et al. 2022:8 [ref. 41297]). Current status: Valid as Potamotrygon adamastor Fontenelle & Carvalho 2017. Potamotrygonidae: Potamotrygoninae. Distribution: South America: Rio Urariquera, Rio Branco system, upper Amazon basin (Brazil); Essequibo River system (Guyana). Habitat: freshwater.