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Maretia Gray 1855 (heart urchin)

Echinoidea - Spatangoida - Spatangidae

PaleoDB taxon number: 33422

Synonym: Hemipatagus Desor 1858 (taxon 144916)

Parent taxon: Spatangidae according to R. A. Henderson 1975

Sister taxa: Atelospatangus, Isomicraster, Laevipatagus, Semipetalion, Spatangus

Subtaxa: Maretia arguta, Maretia estenozi

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Ecology: slow-moving shallow infaunal deposit feeder-detritivore