Kier, P. M. 1965. Evolutionary trends in Paleozoic echinoids. Journal of Paleontology 39, 436-465. page(s): 459-460; figs. 18-20, pl. 58: fig. 2. [details]
original descriptionKier, P. M. 1965. Evolutionary trends in Paleozoic echinoids. Journal of Paleontology 39, 436-465. page(s): 459-460; figs. 18-20, pl. 58: fig. 2. [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): 4 [details] Available for editors
From editor or global species database
Distribution Nevada, U.S.A. [details] Fossil Range Early Mississippian [details]