Incirrata

Incirrata
	An octopus active during the night in the coastal waters of northern East Timor
	An unidentified octopus observed on East Scotia Ridge at a depth of 2,394 m; (scale bar: 10 cm)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	Octopoda
Suborder:	Incirrata; Grimpe, 1916
Families
	Superfamily Octopodoidea Amphitretidae; Bolitaenidae; Octopodidae; Vitreledonellidae; ; Superfamily Argonautoidea Alloposidae; Argonautidae; Ocythoidae; Tremoctopodidae; ;
Synonyms
	Incirrina;

Incirrata (or Incirrina) is a suborder of the order Octopoda. The suborder contains the classic "benthic octopuses," as well as many pelagic octopus families, including the paper nautiluses. The incirrate octopuses are distinguished from the cirrate octopuses by the absence in the former of the "cirri" filaments (found with the suckers) for which the cirrates are named, as well as by the lack of paired swimming fins on the head, and lack of a small internal shell (the "shell" of Argonauta species is not a true shell, but a thin calcite egg case).

^ Rogers, A. D.; Tyler, P. A.; Connelly, D. P.; Copley, J. T.; James, R.; Larter, R. D.; Linse, K.; Mills, R. A.; Garabato, A. N.; Pancost, R. D.; Pearce, D. A.; Polunin, N. V.; German, C. R.; Shank, T.; Boersch-Supan, P. H.; Alker, B. J.; Aquilina, A.; Bennett, S. A.; Clarke, A.; Dinley, R. J.; Graham, A. G.; Green, D. R.; Hawkes, J. A.; Hepburn, L.; Hilario, A.; Huvenne, V. A.; Marsh, L.; Ramirez-Llodra, E.; Reid, W. D.; Roterman, C. N. (2012). Eisen, Jonathan A. (ed.). "The discovery of new deep-sea hydrothermal vent communities in the Southern Ocean and implications for biogeography". PLOS Biology. 10 (1): e1001234. doi:10.1371/journal.pbio.1001234. PMC 3250512. PMID 22235194.

[1] Rogers, A. D.; Tyler, P. A.; Connelly, D. P.; Copley, J. T.; James, R.; Larter, R. D.; Linse, K.; Mills, R. A.; Garabato, A. N.; Pancost, R. D.; Pearce, D. A.; Polunin, N. V.; German, C. R.; Shank, T.; Boersch-Supan, P. H.; Alker, B. J.; Aquilina, A.; Bennett, S. A.; Clarke, A.; Dinley, R. J.; Graham, A. G.; Green, D. R.; Hawkes, J. A.; Hepburn, L.; Hilario, A.; Huvenne, V. A.; Marsh, L.; Ramirez-Llodra, E.; Reid, W. D.; Roterman, C. N. (2012). Eisen, Jonathan A. (ed.). "The discovery of new deep-sea hydrothermal vent communities in the Southern Ocean and implications for biogeography". PLOS Biology. 10 (1): e1001234. doi:10.1371/journal.pbio.1001234. PMC 3250512. PMID 22235194.

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