Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: Coleoidea
Cohors: Neocoleoidea
Superordo: Octopodiformes
Ordo: Octopoda
Subordo: Cirrina
Familiae: Cirroteuthidae - Grimpoteuthididae - Opisthoteuthidae - Stauroteuthidae
Name
Cirrina Grimpe, 1916
Synonyms
* Cirrata Grimpe, 1916
* Cirroctopoda Young, 1989
References
* Piertney, S.B.; Hudelot, C.; Hochberg, F.G.; Collins, M.A. 2003: Phylogenetic relationships among cirrate octopods (Mollusca: Cephalopoda) resolved using mitochondrial 16S ribosomal DNA sequences. Molecular phylogenetics and evolution, 27: 348–353.
Vernacular names
Internationalization
English: Finned Deep-sea Octopus
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.
Classification
* CLASS CEPHALOPODA
o Subclass Nautiloidea: nautilus
o Subclass †Ammonoidea: ammonites
o 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
o Family Opisthoteuthidae: umbrella octopus
o Family Cirroteuthidae
o Family Stauroteuthidae
* Suborder Incirrina
