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 Cranchiidae Prosch, 1847
             Subfamily Taoniinae Pfeffer, 1912
               01 Genus Taonius Steenstrup, 1861
               02 Genus Bathothauma Chun, 1906
               03 Genus Belonella Lane, 1957
               04 Genus Egea Joubin, 1933
               05 Genus Galiteuthis Joubin, 1898
               06 Genus Helicocranchia Massy, 1907
               07 Genus Liguriella Issel, 1908
               08 Genus Megalocranchia Pfeffer, 1884 - large cranch squid
               09 Genus Mesonychoteuthis Robson, 1925 - colossal squid
               10 Genus Sandalops Chun, 1906
               11 Genus Teuthowenia Chun, 1910