6382 Potamotrygon motoro (Müller & Henle, 1841) Potamotrygonidae River stingrays Potamotrygoninae Myliobatiformes Elasmobranchii South American freshwater stingray South America: Uruguay, Paraná-Paraguay, Orinoco, and Amazon River basins. IGFA 5 S 48 W Potomotrygon motoro AMNH 59864 1964 Potamotrygon motoro AMNH 59866 1964 Potamotrygon motoro AMNH 59868 1964 Potamotrygon motoro AMNH 59873 1964 Potamotrygon motoro AMNH 59875 1964 Potamotrygon motoro AMNH 59876 1964 Potamotrygon motoro AMNH 59879 1966 Potamotrygon motoro AMNH 44034 1981 Potamotrygon motoro AMNH 55506 1983 Potamotrygon motoro AMNH 74545 1984 Potamotrygon motoro AMNH 74546 1984 Potamotrygon motoro AMNH 55796 1985 Potamotrygon motoro ISH 17-1989 1989 Potamotrygon motoro AMNH 229273 1998 Potamotrygon motoro