Subfamily Bathoxiphinae Christikov 1983 (tusk shell)
Scaphopoda - Gadilida - Entalinidae
Parent taxon: Entalinidae according to P. D. Reynolds and G. Steiner 2008
Sister taxa: Entalininae, Heteroschismoidinae
Subtaxa: Bathoxiphus, Rhomboxiphus, Solenoxiphus
Ecology: slow-moving shallow infaunal deposit feeder