"Potamotrygonidae" . . "Chordata" . "969813" . "Animalia" . . _:b76600147 . . "1297573" . _:b76600147 "WoRMS id" . . . _:b76600147 . "Myliobatiformes" . . "Styracurinae" . . . _:b76600147 . . _:b76600147 "1297573" .