Echinarachnius Gray 1825 (sand dollar)

Echinoidea - Clypeasteroida - Echinarachniidae

Alternative spellings: Echinarachinus, Scutella (Echinarachnius)

Full reference: J. E. Gray. 1825. An attempt to divide the Echinida, or Sea Eggs, into natural families. Annals of Philosophy, new series 10:423-431

Parent taxon: Echinarachniidae according to J. W. Durham 1966

See also Pack 1909, Sepkoski 2002 and Weaver 1942

Sister taxa: Astrodapsis, Kewia, Nipponaster, Remondella, Tenuirachnius, Vaquerosella

Subtaxa: Echinarachinus excentricus Echinarachinus gibbsii Echinarachnius newcombei

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Ecology: slow-moving semi-infaunal detritivore


• Pliocene of Taiwan (1 collection), United States (1: Alaska)

• Miocene of United States (2: California, New Jersey)

Total: 4 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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