Family Sagdidae Pilsbry 1895 (slug)
Gastropoda - Stylommatophora - Sagdidae
Parent taxon: Sagdoidea according to P. Bouchet et al. 2017
See also Bouchet et al. 2005 and Gingerich 1987
Sister taxa: none
Subtaxa: Microphysula
Ecology: epifaunal
Distribution: found only at Discovery Site (Eocene of Wyoming)