Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
         Suborder Neotaenioglossa Haller, 1882 see Order Sorbeoconcha Ponder & Lindberg, 1997
           Superfamily Cassoidea Latreille, 1825
             Family Ranellidae Gray, 1854 - tritons
               Subfamily Cymatiinae Iredale, 1913 (1854)
                 Genus Cymatium Röding, 1798
                   1 Subgenus Gutturnium Mörch, 1852
                   2 Subgenus Lotoria Emerson & Old, 1963
                   3 Subgenus Monoplex Perry, 1810
                   4 Subgenus Ranularia Schumacher, 1817
                   5 Subgenus Reticutriton Habe & Kosuge, 1966
                   6 Subgenus Septa Perry, 1810
                   7 Subgenus Turritriton Dall, 1904