Echinoidea - Spatangoida - Hemiasteridae
Full reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44
Belongs to Hemiaster according to C. W. Cooke 1953
Sister taxa: Hemiaster (Bolbaster), Hemiaster (Gregoryaster), Hemiaster (Hemiaster), Hemiaster (Holanthus), Hemiaster (Integraster), Hemiaster (Leymeriaster), Hemiaster (Trachyaster), Hemiaster aequisgranensis, Hemiaster alamedensis, Hemiaster amelianus, Hemiaster antillensis, Hemiaster arcolensis, Hemiaster arcticus, Hemiaster atavus, Hemiaster beecheri, Hemiaster bufo, Hemiaster californicus, Hemiaster calvini, Hemiaster cholamensis, Hemiaster comanchei, Hemiaster delawarensis, Hemiaster dewalquei, Hemiaster elegans, Hemiaster globulosus, Hemiaster gonzalezmunozi, Hemiaster hattaensis, Hemiaster humphreysanus, Hemiaster kuemmeli, Hemiaster moscovensis, Hemiaster orbignyi, Hemiaster oregonensis, Hemiaster parastatus, Hemiaster paronai, Hemiaster proclivus, Hemiaster regulusanus, Hemiaster scutiger, Hemiaster sibiricus, Hemiaster stella, Hemiaster texanus, Hemiaster ungula, Hemiaster welleri, Hemiaster wetherbyi, Hemiaster zululandensis
Type specimen: USNM 108400. Its type locality is USGS 1873, Sabinal River, which is in a Coniacian/Santonian marine chalk in the Austin Chalk Formation of Texas.
Ecology: slow-moving shallow infaunal deposit feeder-detritivore
Distribution: found only at USGS 1873, Sabinal River
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.