Traits taxon details
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): 24; pl. 20: fig. 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): 44 [details] Available for editors 
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