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Octocorallia
Octocorallia (Alcyonaria; phylum Cnidaria, class Anthozoa) A subclass of sedentary, colonial corals with polyps that always have eight tentacles which are almost invariably pinnate. There are eight complete, unpaired mesenteries and septa, and a ventral groove on the stomodaeum. Skeletal structures are usually made from calcareous spicules.
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Cite this article
MICHAEL ALLABY. "Octocorallia." A Dictionary of Zoology. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "Octocorallia." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O8-Octocorallia.html MICHAEL ALLABY. "Octocorallia." A Dictionary of Zoology. 1999. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Octocorallia.html |
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Octocorallia
Octocorallia (octocorals) A subclass of the class Anthozoa, poorly known in the fossil record, that ranges from Ordovician to Recent. The colony is shaped like a flat fan of interconnecting branches from which project tubes with many zooids. Heliopora is an important reef former. The pennatulaceans (Pennatulacea) are also octocorals.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "Octocorallia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "Octocorallia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O13-Octocorallia.html AILSA ALLABY and MICHAEL ALLABY. "Octocorallia." A Dictionary of Earth Sciences. 1999. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Octocorallia.html |
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octocorals
octocorals See OCTOCORALLIA.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "octocorals." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "octocorals." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O13-octocorals.html AILSA ALLABY and MICHAEL ALLABY. "octocorals." A Dictionary of Earth Sciences. 1999. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-octocorals.html |
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