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Archaeocidaris M'Coy 1844 (sea urchin)

Echinoidea - Archaeocidaridae

Full reference: F. M'Coy. 1844. A synposis of the characters of the Carboniferous limestone fossils of Ireland 1-274

Parent taxon: Archaeocidaridae according to C. L. Schneider et al. 2005

Sister taxa: Eocidaris, Lepidocidaris, Nortonechinus, Polytaxicidaris, Silurocidaris, Xenocidaris

Subtaxa: Archaeocidaris selwyni

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Ecology: epifaunal grazer-deposit feeder