Traits taxon details
original description
Cooke, C. W. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254A, 1-44., available online at https://pubs.usgs.gov/pp/0254a/report.pdf page(s): 8; pl. 1: figs. 9-11 [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): 36 [details] Available for editors 
From editor or global species database
| |