Antedon
genus of crinoids
Antedon is a genus of sessile, stemless crinoids found in shallow tropical and temperate marine environments worldwide. The genus first appears in the fossil record during the Cretaceous period.
Characteristics
Members of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of cirri or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc. The mouth and the ambulacral grooves are also on the upper surface. Clawed cirri on the lower surface provide temporary attachment to the substrate. There is great variability in the morphological features in antedonids found in different habitats and the main distinguishing feature among the species is the number of cirri.
Feeding
Antedon is a filter feeder, feeding on small particules within the water column. Their feeding rhythms were observed and they tend to feed almost continuously. Antedon does not feed with a diurnal rhythm and they feed at all times of the day including at night.
This brief starts where responsible research should: with the source description of “Antedon” as genus of crinoids. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as genus of crinoids. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated May 22, 2026. The linked authority identifier is Q2852647. None of the 0 selected statements returned an explicit reference.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
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Questions for further research
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This entry incorporates text from “Antedon” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.