Costentalina Christikov 1982 (tusk shell)
Scaphopoda - Gadilida - Gadilidae
Parent taxon: Gadilinae according to P. D. Reynolds and G. Steiner 2008
Sister taxa: Bathycadulus, Cadulus, Gadila, Sulcogadila
Subtaxa: none
Ecology: slow-moving shallow infaunal deposit feeder