Phylum [Mollusca] Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Heterogastropoda see Superfamily Heterogastropoda
         Suborder Ptenoglossa Gray, 1853 see Infraorder Ptenoglossa Gray, 1853
           1 Superfamily Architectonicacea Gray, 1840, nom. illeg. see Superfamily Architectonicoidea Gray, 1850
           2 Superfamily Epitoniacea Berry, 1910 see Superfamily Epitonioidea Berry, 1910 (1812)
           3 Superfamily Triphoracea see Superfamily Triphoroidea Gray, 1847