Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Archaeogastropoda Thiele, 1925 see Order Vetigastropoda Salvini-Plawen, 1980
         Superfamily Cocculinacea Thiele, 1909 see Superfamily Cocculinoidea Dall, 1882
         Superfamily Fissurellacea Fleming, 1822 see Superfamily Fissurelloidea Fleming, 1822
         Superfamily Neritacea see Superfamily Neritoidea Rafinesque, 1815
         Superfamily Patellacea see Superfamily Patelloidea Rafinesque, 1815
         Superfamily Pleurotomariacea see Superfamily Pleurotomarioidea Swainson, 1840
         Superfamily Trochacea see Superfamily Trochoidea Rafinesque, 1815