Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Cephalopoda Cuvier, 1795 - cephalopods
     Subclass Coleoida Bather, 1888 see Subclass Coleoidea Bather, 1888
       Order Teuthida Naef, 1916
         Suborder Oegopsida d'Orbigny, 1845 see Suborder Oegopsina Orbigny, 1845
           Family Ctenopterygidae Grimpe, 1922 [monotypic] see Family Chtenopterygidae Grimpe, 1922
             1 Genus Ctenopteryx Pfeffer, 1900, nom. illeg. see Genus Chtenopteryx Appellöf, 1890