Biology:Anarthraspis

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Short description: Extinct genus of placoderm fishes

Anarthraspis
Temporal range: Early Devonian, 419–393 Ma
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Arthrodira
Genus: Anarthraspis
Bryant, 1934
Species
  • Anarthraspis chamberlini Bryant, 1932 (type)
  • Anarthraspis montanus Bryant, 1932

Anarthraspis is an extinct genus of arthrodire placoderm fishes which lived during the Early Devonian period.[1][2] It contains two species described in 1932, Anarthraspis chamberlini and Anarthraspis montanus, both found in the Beartooth Butte Formation of Wyoming and Montana, USA, and assigned to the genus in 1934.[3]

The type species, Anarthraspis chamberlini, was a contemporary of the placoderm Bryantolepis. The specific epithet, chamberlini, honours United Kingdom Prime Minister Neville Chamberlain.

Anarthraspis is one of the more basal members of the order Arthrodira, as shown in the cladogram below:[4]

Lunaspis broilii

Eurycaraspis incilis

Arthrodira

Yujiangolepis liujingensis

Antarctaspis mcmurdoensis

Wuttagoonaspidae

Yiminaspis shenme

Wuttagoonaspis fletcheri

Aethaspis major

Aethaspis utahensis

Lehmanosteus hyperboreus

Aleosteus eganensis

Simblaspis cachensis

Kujdanowiaspis buczacziensis

Kujdanowiaspis podolica

Erikaspis zychi

Sigaspis lepidophora

Eskimaspis heintzi

Baringaspis dineleyi

Proaethaspis ohioensis

Anarthraspis chamberlini

Heightingtonaspis anglica

Phyllolepida

Gavinaspis convergens

Phyllolepis orvini

Austrophyllolepis sp.

Cowralepis mclachlani

Placolepis budawangensis

Actinolepidae

Bollandaspis woschmidti

Actinolepis spinosa

Actinolepis magna

Actinolepis tuberculata

Bryantolepis brachycephalus

Phlyctaenioidei

Phlyctaeniidae

Groenlandaspidae

Arctaspidae

Dicksonosteus arcticus

Arctolepidae

Brachythoraci

Actinolepidoidei
Phlyctaeniina

References

  1. Schultze, Hans-Peter (1978) (in en). Handbook of Paleoichthyology. G. Fischer Verlag. pp. 45–47. ISBN 978-3-437-30265-7. https://books.google.com/books?id=w39OAQAAIAAJ. 
  2. Camp, Charles Lewis; Taylor, David Nathaniel; Welles, Samuel Paul (1942) (in en). Bibliography of Fossil Vertebrates, 1934-1938. The Society. pp. 462. ISBN 978-0-8137-2042-5. https://books.google.com/books?id=KIMQAAAAIAAJ. 
  3. Bryant, William L.; Ruedemann, Rudolph (Feb 1934). "The Fish Fauna of Beartooth Butte, Wyoming. Parts II and III". Proceedings of the American Philosophical Society 73 (3): 127-167. 
  4. Dupret, V.; Zhu, M. I. N.; Wang, J. N. Q. (2009). "The morphology of Yujiangolepis liujingensis (Placodermi, Arthrodira) from the Pragian of Guangxi (south China) and its phylogenetic significance". Zoological Journal of the Linnean Society 157: 70. doi:10.1111/j.1096-3642.2009.00519.x. 

Wikidata ☰ Q56275435 entry