Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Cephalopoda Cuvier, 1795 - cephalopods
     Subclass Coleoida Bather, 1888 see Subclass Coleoidea Bather, 1888
       Order Octopoda Leach, 1817 - octopuses
         Suborder Incirrata Grimpe, 1917 see Suborder Incirrina Grimpe, 1916
           Superfamily Octopodoidea d'Orbigny, 1840 see Suborder Incirrata Grimpe, 1917
             Family Octopodidae Rafinesque, 1815
               Subfamily Octopodinae Rafinesque, 1815
                 1 Genus Octopus Cuvier, 1798
                 2 Genus Cistopus Gray, 1849
                 3 Genus Danoctopus Joubin, 1933 see Genus Pteroctopus Fischer, 1882
                 4 Genus Euaxoctopus Voss, 1971
                 5 Genus Hapalochlaena Robson, 1929
                 6 Genus Macrochlaena Robson, 1929 see Subgenus Octopus Cuvier, 1798
                 7 Genus Pteroctopus Fischer, 1882
                 8 Genus Sasakinella Taki, 1964 see Genus Pteroctopus Fischer, 1882
                 9 Genus Scaeurgus Troschel, 1857