- Cirrina
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Cirrina Stauroteuthis syrtensis Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Octopoda Suborder: Cirrina
Grimpe, 1916Families Opisthoteuthidae
Cirroteuthidae
StauroteuthidaeSynonyms - Cirrata
Grimpe, 1916 - Cirroctopoda
Young, 1989
Cirrina is a suborder of octopuses. Cirrate octopuses have a small, internal shell and two fins on their head, while their sister suborder 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. Cirrate octopuses are noteworthy for lacking an ink sac.
Classification
- CLASS CEPHALOPODA
- Subclass Nautiloidea: nautilus
- Subclass †Ammonoidea: ammonites
- Subclass Coleoidea
- Superorder Decapodiformes: squid, cuttlefish
- Superorder Octopodiformes
- Family †Trachyteuthididae (incertae sedis)
- Order Vampyromorphida: Vampire Squid
- Order Octopoda
- Genus †Keuppia (incertae sedis)
- Genus †Palaeoctopus (incertae sedis)
- Genus †Paleocirroteuthis (incertae sedis)
- Genus †Pohlsepia (incertae sedis)
- Genus †Proteroctopus (incertae sedis)
- Genus †Styletoctopus (incertae sedis)
- Suborder Cirrina: finned deep-sea octopus
- Family Opisthoteuthidae: umbrella octopus
- Family Cirroteuthidae
- Family Stauroteuthidae
- Suborder Incirrina
External links
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