Octamerism is found in corals of the subclass " Octocorallia ".
2.
The Medusozoa and Octocorallia are proposed as sister groups according to research published in 2012.
3.
The Octocorallia appears to be monophyletic, and primitive members of this group may have been stolonate.
4.
"' Clavularia "'is a genus of corals in the Clavulariidae family, subclass Octocorallia.
5.
Octocorallia comprises the sea pens ( Pennatulacea ), soft corals ( Alcyonacea ), and blue coral ( Helioporacea ).
6.
"' Coenothecalia "'( also known as Helioporacea ) is an order of the subclass Octocorallia that forms massive lobed crystalline calcareous skeletons in colonial corals.
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