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Teudopseina

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Family of octopuses

Teudopseina
Temporal range: Toarcian–Campanian PreꞒ Ꞓ O S D C P T J K Pg N
Fossil of Muensterella scutellaris
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Suborder: †Teudopseina
Roger, 1952
Subgroups

The Teudopseina is a clade of stem-octopods that first evolved in the Toarcian, considered the largest clade of gladius-bearing coleoids in the Mesozoic. Up to five families are known, among which the Trachyteuthidae, Trachyteuthis in particular, were the most abundant.

Description

The Teudopseina can be united by five primary traits. These are the presence of a gladius, a reduced, spoon-shaped conus, a median field that is distinctly rounded or pointed anteriorly, weakly curved hyperbolar zones, and lateral fields shorter than the hyperbolar zones. Members of the superfamily Muensterelloidea are characterized by a spoon-shaped section of the gladius, known as the patella. This is believed to be ancestral to the condition present in modern octopuses.

Taxonomy

The current consensus is that the Teudopseina forms a stem-group of the Octopoda. Certain taxa, such as Enchoteuthis, have sometimes been classified as either relatives of giant squids or vampire squids.

References

  1. Fuchs, Dirk & Weis, Robert. (2010). Taxonomy, morphology and phylogeny of Lower Jurassic teudopseid coleoids (Cephalopoda). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 257. 351-366. 10.1127/0077-7749/2010/0083.
  2. ^ Tree of Life Project: Teudopseina. Tree of Life Web Project. Retrieved 2022-01-15.
  3. Fuchs, D.; Schweigert, G. (2018). "First Middle–Late Jurassic gladius vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. doi:10.1007/s12542-017-0399-8. S2CID 135245479.
  4. Haas, W. 2002. The evolutionary history of the eight-armed Coleoidea. Abhandlungen der Geologischen Bundesanstalt 57: 341-351.
  5. "Fuchs, D. 2009. Octobrachia - a diphyletic origin? Berliner Paläobiologische Abhandlungen 10: 182-192."


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