Order Allogastropoda Haszprunar 1985 (snail)
Parent taxon: Heterostropha according to D. Heidelberger 2001
Sister taxa: Anomalorbis, Palaeoalvania, Stuoraxidae, Architectonicoidea, Euthyneura, Nerineoidea, Misurinella, Valvatoidea, Acteonoidea, Streptacidoidea, Architectibranchia
Subtaxa: Ampezzanildidae Heterodiscohelix Levihelix Mathildoidea Xylodisculidae
Ecology: epifaunal