original description
Cooke, C. W. 1942. Cenozoic irregular echinoids of the Eastern United States. Journal of Paleontology 16, 1-62.
page(s): 19; pl. 4: figs. 9-10 [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): 67 [details] Available for editors
From editor or global species database
Distribution U.S.A. [details]
Fossil range Miocene [details]
Stratigraphy Hawthorn Formation [details]
From editor or global species database