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 Rissoacea Gray, 1847 see Superfamily Rissooidea Gray, 1847
                   Family Pomatiopsidae Stimpson, 1865
                     Subfamily Pomatiopsinae Stimpson, 1865
                       Genus Oncomelania Gredler, 1881
                       Genus Pomatiopsis Tryon, 1862
                       Genus Tomichia Benson, 1851
                       Genus Coxiella Smith, 1894