Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Superorder Archaeogastropoda Thiele, 1925
         1 Order Docoglossa Troschel, 1866
         2 Order Cocculiniformia Hazsprunar, 1987 see Superorder Cocculiniformia Haszprunar, 1987
         3 Order Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.