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Actinernus

Please note: Entries in the above species list are the original binomina of species according to Carlgren's 1949 catalog. Nomenclatorial inconsistencies need to be resolved in a future revision of this genus (see below).
Containing group: Actinernidae

Characteristics

Actinernidae with thick column which expands more or less distally and is often but not always lobed, the lobes usually 8 in number. No sphincter. Tentacles, except the youngest and rarely the inner ones, with aboral thickenings or bridges of varying development which may run up the tentacles almost to their tips. Arrangement of tentacles usually in two cycles, the largest tentacles at the apices of the lobes. Longitudinal muscles of tentacles ectodermal, weak, radial muscles of oral disc ectodermal. 2 well-developed siphonoglyphs. Numerous mesenteries, the older ones developed as usual in the Endocoelantheae, after the stage with 20 mesenteries or somewhat later they continue to appear in definite zones in a bilateral way from the outer side of the zone inwards, usually. These mesenteries have the partners of a pair unequal. The longitudinal muscles of mesenteries as well as the parietobasilar muscles are weak. Cnidom: see the suborder.

References

18048

About This Page
The information provided on this page is based on Oscar Carlgren's 1949 catalog.
Copyright © 1949 Swedish Academy of Sciences.

Please note that Carlgren's text contains a number of errors, and much of the information is now out of date. An update of the catalog is currently under preparation in Daphne Fautin's laboratory, and the results of this work will be incorporated in future versions of this page.

Keyboarding of Carlgren's catalog was done as part of a project to create an electronic database of the sea anemones of the world, funded by NSF Grant DEB9521819, awarded to Daphne G. Fautin. This grant is in the program Partnerships to Enhance Expertise in Taxonomy (PEET). Susanne Hauswaldt, Katherine Pearson, and April Wakefield-Pagels contributed to the keyboarding effort.

Correspondence regarding this page should be directed to Daphne G. Fautin at

All Rights Reserved.

Citing this page:

Tree of Life Web Project. 2000. Actinernus. Version 01 January 2000 (temporary). http://tolweb.org/Actinernus/17678/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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