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 Cyclophoracea Gray, 1847 see Superfamily Cyclophoroidea Gray, 1847
                   Family Diplommatinidae Pfeiffer, 1856
                     Subfamily Diplommatinae see Subfamily Diplommatininae Pfeiffer, 1856
                       1 Genus Diplommatina Benson, 1849
                       2 Genus Palaina Semper, 1865
                       3 Genus Opisthostoma Blanford & Blanford, 1860