original description
Cooke, C. W. 1941a. Cenozoic regular echinoids of eastern United States. Journal of Paleontology 15, 1-20.
page(s): 15; pl. 2: figs. 7-8 [details]
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): 45 [details] Available for editors
From editor or global species database
Distribution U.S.A [details]
Fossil Range Middle Eocene [details]
Stratigraphy McBean Formation [details]