Cirrus octopus

Cirrus octopus
Cirrothauma murrayi
Systematics
Over trunk : Lophotrochozoa (Lophotrochozoa) Trunk : Molluscs (mollusca) Class : Cephalopods (cephalopoda) Subclass : Octopus (coleoidea) Superordinate : Eight-armed squid (Vampyropoda) Order : Cirrus octopus
Scientific name
Cirroctopoda
JZ Young , 1989

The cirrus octopus ( Cirroctopoda or Cirrata ) were only recognized as an independent order in 1989 . In older textbooks they are still listed under the octopus (Octopoda) in the narrower sense. Together with these and the vampire squid- like ones they form the group of eight-armed squids (Octopodiformes or Vampyropoda). The group's monophyly is still controversially discussed.

The characteristics of the cirrus octopus are the fins at the back of the body and the trimming of the arms with two rows of cirrus (a kind of movable body appendages) in addition to a row of suction cups on each arm. There are clear remains of the case in the form of buckle-like, horny structures.

The oldest reliable representatives of the Cirroctopoda are known from the Upper Cretaceous . Thanks to an exclusive appearance some will Grimpoteuthis TYPES based on the Walt Disney - Cartoons Dumbo referred to as "Dumbo octopus".

Systematics

The order of the cirrus octopus is divided into three families .

Stauroteuthis sytrensis (?)

• Opisthoteuthidae
  • Cirroctopus antarctica
  • Cirroctopus glacialis
  • Cirroctopus hochbergi
  • Cirroctopus mawsoni
  • Grimpoteuthis abyssicola
  • Grimpoteuthis bathynectes
  • Grimpoteuthis sp. B.
  • Grimpoteuthis sp. C.
  • Grimpoteuthis sp. D.
  • Grimpoteuthis hippocrepium
  • Grimpoteuthis innominata
  • Grimpoteuthis meangensis
  • Grimpoteuthis megaptera
  • Grimpoteuthis pacifica
  • Grimpoteuthis plena
  • Grimpoteuthis tuftsi
  • Grimpoteuthis umbellata
  • Grimpoteuthis wuelkeri
  • Luteuthis dentatus
  • Luteuthis shuishi
  • Opisthoteuthis agassizii
  • Opisthoteuthis albatrossi
  • Opisthoteuthis bruuni
  • Opisthoteuthis sp. C.
  • Opisthoteuthis californiana
  • Opisthoteuthis chathamensis
  • Opisthoteuthis depressa
  • Opisthoteuthis extensa
  • Opisthoteuthis grimaldii
  • Opisthoteuthis sp. H
  • Opisthoteuthis massyae
  • Opisthoteuthis medusoides
  • Opisthoteuthis mero
  • Opisthoteuthis persephone
  • Opisthoteuthis philipii
  • Opisthoteuthis pluto
  • Opisthoteuthis robsoni
• Cirroteuthidae
  • Cirrotheutis muelleri
  • Cirrothauma magna
  • Cirrothauma murrayi
• Stauroteuthidae
  • Stauroteuthis gilchristi
  • Stauroteuthis syrtensis

literature

• Thomas Berthold and Theo Engeser: Phylogenetic analysis and systematization of the Cephalopoda (Mollusca). Negotiations of the Natural Science Association Hamburg, NF, 29: 187–220, Hamburg 1987 ISSN  0173-749X
• David B. Carlini, Richard E. Young and Michael Vecchione: A molecular phylogeny of the Octopoda (Mollusca: Cephalopoda) evaluated in light of morphological evidence. Molecular Phylogenetics and Evolution, 21 (3): 388-397, San Diego 2001 ISSN  1055-7903
• Richard E. Young and Michael Vecchione: Evolution of the gills in the Octopodiformes. Bulletin of Marine Science, 71 (2): 1003-1017, Coral Gables, Florida 2002 ISSN  0007-4977