Periaster (heart urchin)

Echinoidea - Spatangoida - Hemiasteridae

Parent taxon: Hemiasteridae according to U. S. Grant and L. G. Hertlein 1938

See also Sepkoski 2002

Sister taxa: Cheopsia, Crucibrissus, Distefanaster, Ditremaster, Eoagassizia, Hemiaster, Heterolampas, Holcopneustes, Hypsopatagus, Isopetalum, Mecaster, Palhemiaster, Psephoaster, Tripylaster, Vomeraster, Washitaster

Subtaxa: none

Ecology: slow-moving shallow infaunal deposit feeder-detritivore

Distribution:

• Paleocene of United States (2: California collections)

• Cretaceous of France (14), Peru (1)

Total: 17 collections including 18 occurrences

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Specimen images are retrieved through the ePANDDA API.


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