Family Potamotrygonidae Garman 1877

Potamotrygones Garman 1877:208 [ref. 1528] (group?) Potamotrygon [stem Potamotrygon- confirmed by Eigenmann 1912:116 [ref. 1227]]

Ellipesurinae [Elipesurinae] Gill 1877b:958 [ref. 32501] (subfamily) Elipesurus [stem corrected to Elipesurby Jordan 1923a:104 [ref. 2421], confirmed by Myers & Storey 1956:15 [ref. 32831]]

Paratrygoninae Gill 1893b:130 [ref. 26255] (subfamily) Paratrygon [genus inferred from the stem, Article 11.7.1.1]