Amphiura

Amphiura is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions.

Amphiura
Scientific classification
Kingdom:
Animalia
Phylum:
Echinodermata
Subphylum:
Eleutherozoa
Class:
Ophiuroidea
Order:
Ophiurida
Suborder:
Gnathophiurina
Family:
Amphiuridae
Genus:
Amphiura

Forbes, 1843
Species

see text.

Systematics and phylogeny

Amphiura is a large genus that is currently divided into the following six subgenera: Amphioplus, Amphiura, Fellaria, Ophionema, Ophiopelte and Ophiopeltis. The once used subgenus Acrocnida has been elevated to a genus rank. Fossil record of the genus date back to Turonian (Amphiura plana).[1]

Species

Extant species include:[2][3]

gollark: Anyway, do you want a particularly portable laptop or do you not care much?
gollark: (or better)
gollark: The boost clocks are higher though, so it's probably about the same on single-core tasks.
gollark: Look at the i5-7200U vs i5-8250U. They have the same 15W TDP (not that Intel make that very meaningful) but the 7200U has half the cores and higher base clocks.
gollark: Yes. They used to have 2 cores.

References
  1. Storc, The ophiuroid Amphiura? plana in nearshore settings of the Bohemian Cretaceous Basin (Czech Republic)R.Geologia Carpathica,Vol.55, No 1(2004)
  2. MarineSpecies.org - Amphiura Forbes, 1843
  3. Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E. 2010. Two Oceans: a guide to the marine life of southern Africa ISBN 978-1-77007-772-0


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