Vermetus (Bivonia) Gray 1842 (worm shell)
Gastropoda - Sorbeoconcha - Vermetidae
Alternative spelling: Bivonia
Parent taxon: Vermetus according to J.-M. Pacaud and J. Le Renard 1995
See also Sepkoski 2002
Sister taxa: Vermetus (Thylaeodus), Vermetus (Vermetus), Vermetus anellum, Vermetus anguis, Vermetus carmatus, Vermetus cornejoi, Vermetus cristatus, Vermetus giganteus, Vermetus hanguensis, Vermetus javanus, Vermetus junghuhni, Vermetus lumbricalis, Vermetus maximus, Vermetus pulcher, Vermetus quadricarinatus, Vermetus stampinensis, Vermetus tokyoensis
Subtaxa: Bivonia cretacea
Ecology: stationary epifaunal suspension feeder
Distribution: