Classis CEPHALOPODA Cuvier 1797
Subclassis COLEOIDA Bather, 1888

Ordo SEPIIDA Zittel, 1895

Subordo SPIRULINA Pompeckj, 1912

Familia SPIRULIDAE Rafinesque, 1815 (Sea)

Genus Spirula Lamarck, 1801
= Lituina Link, 1806
= Lituus Gray, 1849

Ordo OCTOPODA Leach, 1818

Subordo INCIRRATA Grimpe, 1916

Superfamilia OCTOPODOIDEA Vaught, 1989

Familia OCTOPODIDAE d'Orbigny in Férussac & d'Orbigny,1840 (shell-less)
Subfamilia OCTOPODINAE d'Orbigny in Férussac & d'Orbigny,1840

Genus Octopus Lamarck, 1798
= Eledonenta Rochebrune, 1884
= Macrotritopus Grimpe, 1922
= Polypus Schneider, 1784 in Hoyle, 1901

Superfamilia ARGONAUTOIDEA Lamarck, 1809

Familia ARGONAUTIDAE Cantraine, 1841 (Sea)

Genus Argonauta Linnaeus, 1758