Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
       Order Cephalaspidea Fischer, 1883
         Superfamily Acteonoidea d'Orbigny, 1843
           Family Ringiculidae Philippi, 1853
             Genus Ringicula Deshayes, 1838
               1 Subgenus Ringicula Deshayes, 1838
               2 Subgenus Ringiculina Monterosato, 1884
               3 Subgenus Ringiculinopsis Lin, 1983