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Cirrina
From Wikipedia, the free encyclopedia
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 Stauroteuthis syrtensis
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Cirrina is a suborder of the order Octopoda. Cirrina octopuses have a small, internal shell and two fins on their head, while their sister suborder, the Incirrina has neither.
The suborder is named for small cilia-like strands on the arms of the octopus. There is a pair of cirri for each sucker. These are thought to play some role in feeding, perhaps by creating currents of water that help bring food closer to the beak.
- CLASS CEPHALOPODA
- Subclass Nautiloidea: nautilus
- Subclass †Ammonoidea: ammonites
- Subclass Coleoidea
- Superorder Decapodiformes: squid, cuttlefish
- Superorder Octopodiformes
- Order Vampyromorphida: Vampire Squid
- Order Octopoda
- Genus †Pohlsepia (incertae sedis)
- Genus †Proteroctopus (incertae sedis)
- Genus †Palaeoctopus (incertae sedis)
- Suborder Cirrina: finned deep-sea octopus
- Family Opisthoteuthidae: umbrella octopus
- Family Cirroteuthidae
- Family Stauroteuthidae
- Suborder Incirrina
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