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Echinarachnius Gray 1825 (sand dollar)

Echinoidea - Clypeasteroida - Echinarachniidae

PaleoDB taxon number: 33121

Alternative spelling: 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

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

Subtaxa: Echinarachnius newcombei

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Ecology: slow-moving semi-infaunal detritivore