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131 species. 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.
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May 8, 2018 · Zoantharia (Hexacorallia; phylum Cnidaria, class Anthozoa) A subclass of solitary and colonial anthozoans, with or without a calcareous exoskeleton, that are characterized by paired mesenteries being first developed in a cycle of six; and by the insertion of new pairs in two (ventrolateral), four (lateral and ventrolateral), or all six primary ...
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.
Nov 7, 2003 · Subclass Hexacorallia (= Zoantharia) of cnidarian class Anthozoa currently contains six orders: Actiniaria (sea anemones), Antipatharia (black corals), Ceriantharia (tube anemones), Scleractinia (stony corals), Corallimorpharia (corallimorpharians), and Zoanthidea (zoanthids).
Hexacorallia (Hexacorallians) is a subclass of cnidarians. There are 5534 species of Hexacorallians, in 1144 genera and 198 families. It includes groups like Corallimorpharians , Black Corals, and Zoanthids. They are carnivores. They have sexual reproduction and asexual reproduction.
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May 7, 2014 · Sea anemones (order Actiniaria) are among the most diverse and successful members of the anthozoan subclass Hexacorallia, occupying benthic marine habitats across all depths and latitudes. Actiniaria comprises approximately 1,200 species of solitary and skeleton-less polyps and lacks any anatomical synapomorphy.
Introduction. Octocorallia and Scleractinia of the subclass Hexacorallia are two of the major groups of cnidarians with continuous or discontinuous calcium carbonate or horn-like skeletons that are commonly known as corals.
