original description
Eaton, J. E.; Grant, U. S.; Allen, H. B. (1941). Miocene of Caliente Range and Environs, California. <em>Bulletin of the American Association of Petroleum Geologists.</em> 25(2): 193-262.
page(s): ; pl. 6: fig. 1 and plate explanation [details] Available for editors 
basis of record
Kier, P. M. & Lawson, M. H. 1978. Index of living and fossil echinoids 1924-1970. Smithsonian Contributions to Paleobiology 34, 1-182., available online at https://doi.org/10.5479/si.00810266.34.1
page(s): 70 [details] Available for editors 
From editor or global species database
Distribution California, U.S.A. [details]
Fossil Range Early upper Cierbo, Late Miocene [details]