Ceriantharia

invertebrate order

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In cnidarian: Annotated classification
Order Ceriantharia Tube anemones. Solitary polyps with 2 sets of tentacles (oral and marginal) that form feltlike tubes of specialized cnidae (ptychocysts) and burrow in soft sediments. Shallow waters worldwide. Subclass Zoantharia Sea anemones and corals. Six (or multiples of 6) tentacles (rarely branched). Mesenteries commonly…
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In cnidarian: Critical appraisal
Similarity of larval ceriantharians to antipatharian polyps is the rationale for subclass Ceriantipatharia. Morphology of antipatharians is, however, in some ways, nearer that of alcyonarians than of zoantharians, and alternative schemes place Antipatharia in subclass Alcyonaria. Ceriantharia, too, sits uncomfortably in Zoantharia, although it bears no special relationship…
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