Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
         1 Order Archaeogastropoda Thiele, 1925 see Order Vetigastropoda Salvini-Plawen, 1980
         2 Order Mesogastropoda Thiele, 1925 - mesogastropods see [unranked] mesogastropods
         3 Order Neogastropoda Wenz, 1938 see Suborder Neogastropoda Wenz, 1938