After "The Tree of Life" and Felley, Vecchione, Roper, Sweeney & Christensen, 2001-
<==o Architeuthidae Pfeffer, 1900 (giant squids; jättiläiskalmarit)
`--o Architeuthis Steenstrup, 1857
|-- A. dux Steenstrup, 1857 (giant squid; jättiläiskalmari)
|?- A. hartingii Verrill, 1875 [status doubtful]
|?- A. japonica Pfeffer, 1912 [status doubtful]
|?- A. kirkii Robson, 1887 [status doubtful]
|-- A. martensi (Hilgendorf, 1880)
|-- A. physeteris (Joubin, 1900)
|-- A. sanctipauli (Velain, 1877)
`?- A. stockii (Kirk, 1882) [status doubtful]
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/