Silva, J.P.C.B.D. & Carvalho, M.R.D. (2015) Systematics and morphology of Potamotrygon orbignyi (Castelnau, 1855) and allied forms (Chondrichthyes: Myliobatiformes: Potamotrygonidae). Zootaxa, 3982 (1), 1–82.
https://doi.org/10.11646/zootaxa.3982.1.1