original description
Holland, F. D. Jr. & Feldmann, R. M. 1967. A new species of cassiduloid echinoids from the Fox Hills Formation (Upper Cretaceous) of North Dakota. Journal of Paleontology 41, 252-255.
page(s): 252-255; fig. 1 [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): 83 [details] Available for editors
From editor or global species database
Distribution North Dakota, U.S.A [details]
Fossil Range Maastrichtian, Late Cretaceous [details]
From editor or global species database