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Corallimorpharia

coral anemones(+6)

GBIF:1242

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Descriptions(13)

Order Corallimorpharia

Anthozoa occurring in shallow and deep seas. Deep-sea forms solitary; most shallow-water forms clonal, undergoing asexual reproduction by longitudinal fission or pedal laceration. Zooxanthellae present or absent. Consistency soft or rigid, depending on thickness of mesoglea; mucus copious. Base flattened, usually adherent in shallowwater forms, may be unattached in deep-sea ones; lacks basilar muscles. Column smooth; without vesicles, verrucae, or spherules; rarely divisible into scapus and scapulus; may have weak longitudinal muscles. No marginal sphincter muscle or a weak, diffuse, endodermal one. Oral disc can be withdrawn or not. Tentacles generally not retractile; simple or branched; a simple tentacle may have an acrosphere at its distal end. Only one tentacle communicates with each exocoel; multiple tentacles may communicate with each endocoel; tentacles radially and cyclically arrayed. Longitudinal muscles of tentacles and radial muscles of oral disc usually weak, ectodermal. Actinopharynx short, with deep longitudinal folds; siphonoglyphs weakly developed or absent. Mesenteries commonly irregularly arranged; complete mesenteries usually numerous, directives present or absent. Retractor and parietobasilar muscles weak. Gametogenic region of mesenteries at the same level as the filaments. Mesenterial filaments with cnidoglandular tract only. Holotrichous nematocysts typically numerous; spirocysts may be rare or absent. Cnidom: spirocysts, holotrichs, microbasic b- mastigophores, and microbasic p -mastigophores.

Corallimorphus niwa new species (Cnidaria: Anthozoa), New Zealand members of Corallimorphus, and redefinition of Corallimorphidae and its membersMagnoliaPress via PlaziNo known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.

Actinodiscus de Blainville, 1830 Type species: Discosoma nummiforme Rüppell and Leuckart, 1828, by monotypy. Nomenclature notes: Type species is in agreement with Carlgren (1949). In agreement with Edwards et al. (1996), senior homonym of echinoderm genus Actinodiscus of Smith, A. B. and C. R. C. Paul, 1982, Revision of the class Cyclocystoidea (Echinodermata). Philosophical Transactions of the Royal Society of London B 298 (1083): 625. Authorship of the corallimorpharian genus is in agreement with Neave (1939 a) and with Carlgren (1949), and that of the echinoderm genus with Edwards et al. (1996). Currently considered valid: Yes Actinotryx Duchassaing de Fonbressin and Michelotti, 1860 Type species: Actinotryx Sancti Thomae Duchassaing de Fonbressin and Michelotti, 1860, by monotypy. Nomenclature notes: Authorship is in agreement with Neave (1939 a). Spelling errors or variants: Actinothrix, Actinothryx, Actinotrynx Currently considered valid: No