Order OCTOPODA Leach, 1818
Compiler and date details
C.C. Lu, National Chung Hsing University, Taichung, Taiwan
Taxonomic Decision for Synonymy
- Strugnell, J.M., Norman, M.D., Vecchione, M., Guzic, M. & Allcock, A.L. 2014. The ink sac clouds octopod evolutionary history. Hydrobiologia 725: 215-235
Introduction
The order Octopoda includes the inshore, shallow water benthic octopods, the pelagic octopods and the deepwater finned octopods.
The order is divided into two suborders: Cirrata and Incirrata.
Diagnosis
Four pairs of arms present; no retractable thread-like filaments. Suckers sessile (rarely stalked) in 1or 2 rows; lacking chitinous rings. Arms commonly connected by web, which may be very deep. Fins either absent or one pair of short, paddle-like fins situated on sides of mantle. Mantle always fused with head in occipital area but generally not fused with funnel. Mantle and funnel cartilages, if present, simple in form of tubercle and pit. Mantle cavity connected with exterior usually by one opening at ventral side of body, rarely by two, one on each side. No external photophores or composite structure; only a few species have simple photophores. Gladius represented by a cartilaginous fin support, reduced to small cartilaginous rods, or absent.
General References
Nesis, K.N. 1982. Cephalopods of the World. English Translation from Russian. Levitov, B.S. (Transl.), Burgess, L.A. (ed.) (1987) Neptune City : T.F.H. Publications, Inc. 351 pp. [English Translation from Russian]
History of changes
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 12-Feb-2010 | (import) |