Author: Castex, 1964
Remark: Spelled <i>Potamotrygon schuhmacheri</i> in the title of the original descriprion, but <i>Potamotrygon schühmacheri</i> in the text, and wrongly emended by Taniuchi (1982) to <i>Potamotrygon schuemacheri</i>. Reproductive biology unknown. Additional reference: Compagno & Cook (1995). Possibly a junior synonym of <i>P. histrix</i>.