living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Mollusca Linnaeus, 1758 - molluscs
           Class Gastropoda Cuvier, 1795 - snails and slugs
             Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
               Order Mesogastropoda Thiele, 1925 - mesogastropods see [unranked] mesogastropods
                 Superfamily Cerithiacea Férussac, 1819 see Superfamily Cerithioidea Fleming, 1822
                   Family Cerithiidae Fleming, 1822 - ceriths
                     01 Genus Cerithium Bruguière, 1789
                     02 Genus Rhinoclavis Swainson, 1840
                     03 Genus Pseudovertagus Vignal, 1904
                     04 Genus Clypeomonus see Genus Clypeomorus Jousseaume, 1888
                     05 Genus Bittium Gray, 1847
                     06 ?Genus Diala Adams, 1861
                     07 ?Genus Alaba Adams & Adams, 1853
                     08 ?Genus Glosia Cossmann, 1921
                     09 ?Genus Fenella Adams, 1864, nom. illeg. see Genus Finella Adams, 1860
                     10 ?Genus Litiopa Rang, 1829