original description
Belanski, C. H. 1928. The Shellrock Stage of the Devonian of Iowa. American Midland Naturalist 11, 165-170.
page(s): 184-186; pl. 13: figs. 29-34 [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): 4 [details] Available for editors 
From editor or global species database
Distribution Iowa, U.S.A. [details]
Fossil Range Late Devonian [details]