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
             Family Trochidae Rafinesque, 1815 - top snails
               Subfamily Eucyclinae Koken, 1897 see Family Eucyclidae Koken, 1896
                 Tribe †Eucyclini Koken, 1897 see Family Eucyclidae Koken, 1896
                   1 Genus †Amberleya Morris & Lycett, 1851
                   2 Genus †Eucyclus Eudes Deslongchamps, 1861
                   3 Genus †Eucyclophalus Millard, 1997, orth. inval. see Genus Eucyclomphalus Ammon, 1893
                   4 Genus †Hamusina Gemmellaro, 1879