original descriptionCooke, C. W. 1941a. Cenozoic regular echinoids of eastern United States. Journal of Paleontology 15, 1-20. page(s): 10; pl. 1: figs. 1-3 [details]
basis of recordKier, P. M. & Lawson, M. H. 1978. Index of living and fossil echinoids 1924-1970. Smithsonian Contributions to Paleobiology 34, 1-182., available online athttps://doi.org/10.5479/si.00810266.34.1 page(s): 35 [details] Available for editors