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
         Order Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.
           Superfamily Trochoidea Rafinesque, 1815
             1 Family Turbinidae Rafinesque, 1815 - turban snails
             2 Family Trochidae Rafinesque, 1815 - top snails
             3 Family Skeneidae Clark, 1851 see Subfamily Skeneinae Clark, 1851
             4 Family Lissospiridae Millard, 1996, nom. nud. see Family Skeneidae Clark, 1851
             5 Family Cyclostrematidae Fischer, 1885 see Subfamily Liotiinae Gray, 1850
             6 Family Pelycidiidae Ponder & Hall, 1983 [monotypic] see Subfamily Pelycidiinae Ponder & Hall, 1983