de Carvalho, M.R., Perez, M.H.S. & Lovejoy, N.R. (2011) Potamotrygon tigrina, a new species of freshwater stingray from the upper Amazon basin, closely related to Potamotrygon schroederi Fernandez-Yépez, 1958 (Chondrichthyes: Potamotrygonidae). Zootaxa, 2827 (1), 1–30.