†Periaster (heart urchin)
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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 (16), Peru (1)
Total: 19 collections including 20 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.