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
                 Genus Octopus Cuvier, 1798
                   Subgenus Callistoctopus Taki, 1964 see Genus Callistoctopus Taki, 1964