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Hexacorallia is a class of Anthozoa comprising approximately 4,300 species of aquatic organisms formed of polyps, generally with 6-fold symmetry. It includes all of the stony corals, most of which are colonial and reef-forming, as well as all sea anemones, and zoanthids, arranged within five extant orders. [2]
Hexacorallia is a class of Anthozoa comprising approximately 4,300 species of aquatic organisms formed of polyps, generally with 6-fold symmetry. It includes all of the stony corals, most of which are colonial and reef-forming, as well as all sea anemones, and zoanthids, arranged within five extant orders. The hexacorallia are distinguished ...
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The two main subclasses of Anthozoa are the Hexacorallia, members of which have six-fold symmetry and includes the stony corals, sea anemones, tube anemones and zoanthids; and the Octocorallia, which have eight-fold symmetry and includes the soft corals and gorgonians ( sea pens, sea fans and sea whips ), and sea pansies.
Nov 7, 2003 · The most basal group within Hexacorallia is the Ceriantharia; members of this order share non-retractile tentacles arranged in labial and marginal cycles, ptychocysts, and 25 18S substitutions. The monophyly of the sister-group to Ceriantharia, a clade containing all other hexacorallian orders, is supported by nine 18S substitutions, microbasic ...
- Marymegan Daly, Daphne G. Fautin, Valerie A. Cappola
- 2003
Source: Wikipedia. Hexacorallia is a subclass of Anthozoa comprising approximately 4,300 species of aquatic organisms formed of polyps, generally with 6-fold symmetry.
This list of prehistoric hexacorals (Scleractinia) is an attempt to create a comprehensive listing of all genera that have ever been included in the hexacorallia which are known from the fossil record. This list excludes purely vernacular terms.
Aug 31, 2020 · In contrast to Hexacorallia, Octocorallia exhibits many different skeletal forms that have been gained and lost multiple times (Fig. 1). Most octocorals have sclerites—free skeletal elements of ...
