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 Cerithiopsidae Adams & Adams, 1853
                     1 Genus Cerithiopsis Forbes & Hanley, 1851
                     2 Genus Eumetula Thiele, 1912
                     3 Genus Seila Adams, 1861
                     4 Subfamily Aliptinae Marshall, 1978
                     5 Subfamily Eumetulinae Golikov & Starobogatov, 1975
                     6 Subfamily Cerithiopsinae Adams & Adams, 1853