Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Divasibranchia Minichev & Starobogatov, 1975 Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855 Suborder Elasmognatha Mörch, 1864 see [unranked] Elasmognatha Mörch, 1864 1 Superfamily Succineoidea Beck, 1837 [monotypic] 2 Superfamily Athoracophoroidea Fischer, 1883 (1860) [monotypic]