original description
Grant, U. S. I. & Hertlein, L. G. 1938. The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences 2, 1-225.
page(s): 104-105; pl. 22: figs. 1-3, 6, pl. 23: figs. 6-7 [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): 50 [details] Available for editors
From editor or global species database
Distribution California, U.S.A [details]
Fossil Range Pliocene [details]