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Scleralcyonacea

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Scleralcyonacea
Chrysogorgia sp.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Cnidaria
Subphylum: Anthozoa
Class: Octocorallia
Order: Scleralcyonacea
McFadden, van Ofwegen & Quattrini, 2022

Scleralcyonacea, previously referred to as Calcaxonia, is an order of soft corals in the class Octocorallia.[1]

History

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A 2022 phylogenetic study found Octocorallia to be divided into two monophyletic lineages, which were established as the orders Scleralcyonacea and Malacalcyonacea.[2] Scleralcyonacea was found to contain all taxa formerly assigned to the order Pennatulacea (the sea pens, which are now part of superfamily Pennatuloidea), Helioporacea, and Calcaxonia besides Isis, alongside multiple smaller clades.[3] While the genus Isis was historically placed within Calcaxonia as a relative of Keratoisididae and Mopseidae, it was found to be unrelated, with the difference in internode growth patterns being identified as phylogenetically informative.[4]

Scleralcyonacea was named after Greek σκληρός (sklēros, transl. hard) and former coral order Alcyonacea, as most of its members contain either an axial skeleton made of calcium carbonate or sclerites fused with calcitic material.[5]

Taxonomy

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Scleralcyonacea contains the monophyletic sea pens (superfamily Pennatuloidea) as well as 21 other families and two incertae sedis genera. The order includes the following:[1]

References

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  1. ^ a b "WoRMS - World Register of Marine Species - Scleralcyonacea". marinespecies.org. Retrieved 2024-07-14.
  2. ^ McFadden, Ofwegen & Quattrini 2022, p. 17.
  3. ^ McFadden, Ofwegen & Quattrini 2022, p. 7.
  4. ^ McFadden, Ofwegen & Quattrini 2022, p. 15.
  5. ^ McFadden, Ofwegen & Quattrini 2022, p. 21.

Works cited

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Bibliography

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  • Taxonomic Study of Suborder Calcaxonia (Alcyonacea: Octocorallia: Anthozoa) from King Sejong Station, Antarctic. Song Jun-Im, Hwang Sung-Jin, Moon Haewon and An In-Young, Animal Systematics, 30 Apr 2012, Evolution and Diversity Volume 28, Issue2, pages 84~96, doi:10.5635/ASED.2012.28.2.084
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