"Animalia" . "Discus catskillensis" . "Discus" . "Stylommatophora" . . . . . . "Gastropoda" . . "(Pilsbry 1896)" . . . "Discus catskillensis (Pilsbry 1896)" . "Endodontidae" . . "Mollusca" . . . . . . . . . . "Angular Disc Snail" .