Phylum [Mollusca] Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Archaegastropoda see Order Archaeogastropoda Thiele, 1925
         Superfamily Trochacea see Superfamily Trochoidea Rafinesque, 1815
           Family Trochidae Rafinesque, 1815 - top snails
             1 Subfamily Calliostomatinae Thiele, 1924 (1847)
             2 Subfamily Gibbulinae Stoliczka, 1868 see Tribe Monodontini Gray, 1857, nom. illeg.
             3 Subfamily Margaritinae Thiele, 1924, nom. cons. prop.
             4 Subfamily Monodontinae Gray, 1857, nom. illeg. see Tribe Monodontini Gray, 1857, nom. illeg.
             5 Subfamily Stomatellinae Gray, 1840
             6 Subfamily Trochinae Rafinesque, 1815
             7 Subfamily Umboniinae Adams & Adams, 1854 (1840)