After "The Tree of Life" and Felley, Vecchione, Roper, Sweeney & Christensen, 2001-
<==o Oegopseida d'Orbigny, 1845 [Decapoda Leach, 1817 (Cephalopoda) not Decapoda Latreille, 1803 (Crustacea)] (kalmarit)
|-- Architeuthidae Pfeffer, 1900 (giant squids; jättiläiskalmarit)
|--o Brachioteuthis Verrill, 1881 [Brachioteuthidae Pfeffer, 1908]
| |-- B. beani Verrill, 1881
| |-- B. behni (Steenstrup, 1882)
| |?- B. bowmani Russell, 1909 [status doubtful]
| |-- B. picta Chun, 1910
| `-- B. riisei (Steenstrup, 1882)
|--o Cycloteuthidae Naef, 1923
| |-- Cycloteuthis Joubin, 1919
| | |-- C. sirventi Joubin, 1919
| | `-- C. akimushkini Filippova, 1968
| `--o Discoteuthis Young & Roper, 1969
| |-- D. discus Young & Roper, 1969
| `-- D. laciniosa Young & Roper, 1969
|-- Cranchiidae Prosch, 1847
|-- Gonatidae Hoyle, 1886
|-- Ommastrephidae (nuolikalmarit)
|-- Onychoteuthidae Gray, 1849
|--o Neoteuthidae Naef, 1921 [Alluroteuthidae Odhner, 1923]
| |-- Neoteuthis thielei Naef, 1921
| |-- Allurotethis antarctica Odhner, 1923
| `-- Nototeuthis dimegacotyle Nesis & Nikitina, 1986
|--o Thysanoteuthis Troschel, 1857 [Thysanoteuthidae Keferstein, 1866]
| |?- T. nuchalis Pfeffer, 1912 [status doubtful]
| |?- T. ?danae (Joubin, 1933) [status doubtful]
| `-- T. rhombus Troschel, 1857
|-- Walvisteuthis virilis Nesis & Nikitina, 1986 [Walvisteuthidae Nesis & Nikitina, 1986]
|-- "Histioteuthoidea"
|-- "Chiroteuthoidea"
|-- "Enoploteuthoidea"
`-- "Lepidoteuthoidea"
Reference(s):
Felley, J., Vecchione, M., Roper, C. F. E., Sweeney, M. & Christensen, T., 2001-2003: Current Classification of Recent Cephalopoda.
–iNet: National Museum of Natural History: Departent of Systematic Biology: Invertebrate Zoology: http://www.mnh.si.edu/cephs/
–iNet: The Tree of Life Project: http://tolweb.org/