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
                 01 Superfamily Cyclophoracea Gray, 1847 see Superfamily Cyclophoroidea Gray, 1847
                 02 Superfamily Viviparacea see Superfamily Viviparoidea Gray, 1847 (1833)
                 03 Superfamily Valvatacea Blake, 1987 see Superfamily Valvatoidea Gray, 1840
                 04 Superfamily Littorinacea Gray, 1840 see Superfamily Littorinoidea Children, 1834
                 05 Superfamily Rissoacea Gray, 1847 see Superfamily Rissooidea Gray, 1847
                 06 Superfamily Loxonematacea see Superfamily Loxonematoidea Koken, 1889
                 07 Superfamily Cerithiacea Férussac, 1819 see Superfamily Cerithioidea Fleming, 1822
                 08 Superfamily Heterogastropoda
                 09 Superfamily Epitoniacea Berry, 1910 see Superfamily Epitonioidea Berry, 1910 (1812)
                 10 Superfamily Eulimacea see Superfamily Eulimoidea Philippi, 1853
                 11 Superfamily Strombacea Rafinesque, 1815 see Superfamily Stromboidea Rafinesque, 1815
                 12 Superfamily Hipponicacea Troschel, 1861 see Superfamily Vanikoroidea Gray, 1840
                 13 Superfamily Calyptraeacea Lamarck, 1809, nom. illeg. see Superfamily Calyptraeoidea Lamarck, 1809
                 14 Superfamily Cypraeacea see Superfamily Cypraeoidea Rafinesque, 1815
                 15 Superfamily Heteropoda Lamarck, 1812 see Superfamily Pterotracheoidea Rafinesque, 1814
                 16 Superfamily Naticacea Forbes, 1838 see Superfamily Naticoidea Guilding, 1834
                 17 Superfamily Tonnacea Suter, 1913 see Superfamily Tonnoidea Suter, 1913 (1825)