Elipesurus Schomburgk [R. H.] 1843:184 Masc. Elipesurus spinicauda Jardine & Schomburgk 1843. Type by monotypy. Original is Elipesurus; Ellipesurus is a misspelling or unjustified emendation. •Valid as Elipesurus Schomburgk 1843 -- (Castex 1964:18 [ref. 20924], Bailey 1969:133 [ref. 14234], Fowler 1970:571 [ref. 7313]; see Rosa et al. 1987:447 [ref. 5974]). •Genus inquirendum, with author as Jardine -- (Carvalho et al. in Reis et al. 2003:26 [ref. 27061], Carvalho & Lovejoy 2011:18 [ref. 31182] with author as Schomburgk). Current status: Valid as Elipesurus Schomburgk 1843. Potamotrygonidae: Potamotrygoninae.