Phylum Mollusca Linnaeus, 1758 - molluscs
Status: extant
   Class Cephalopoda Cuvier, 1795 - cephalopods
  Status: extant
     Subclass Coleoida Bather, 1888 see Subclass Coleoidea Bather, 1888
    Status: extant
       1 Order Belemnitida Gray, 1849
      Status: unknown
       2 Order Sepiida Gray, 1849
      Status: extant
       3 Order Teuthida Naef, 1916
      Status: extant
       4 Order Vampyromorpha Grimpe, 1917 [monotypic] - vampire squids see Order Vampyromorphida Pickford, 1939
      Status: extant
       5 Order Octopoda Leach, 1817 - octopuses
      Status: extant