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 Trochinae Rafinesque, 1815
                 Tribe Trochini Rafinesque, 1815
                   1 Genus Trochus Linnaeus, 1758
                   2 Genus Clanculus Montfort, 1810
                   3 Genus Clelandella Winckworth, 1932
                   4 Genus †Dimorphotectus Cossmann, 1918
                   5 Genus †Discotectus Favre, 1913
                   6 Genus Oligomeria Galkin & Golikov, 1985
                   7 Genus Pseudotalopia Habe, 1961
                   8 Genus Tectus Montfort, 1810