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