Dischides Jeffreys 1867 (tusk shell)
Scaphopoda - Gadilida - Gadilidae
Parent taxon: Siphonodentaliinae according to P. D. Reynolds and G. Steiner 2008
Sister taxa: Polyschides, Sagamicadulus, Siphonodentalium, Striocadulus
Subtaxa: none
Ecology: slow-moving shallow infaunal deposit feeder