Traits taxon details
original description
Durham, J. W. (1950). E.W. Scripps Cruise to the Gulf of California, Part 2: Megascopic Paleontology and Marine Stratigraphy. <em>The Geological Society of America Memoir.</em> 43: i-viii, 1-216. page(s): 43-44; pl. 37: fig. 15, pl. 42: figs. 1, 3-4, 10 [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): 72 [details] Available for editors 
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