original description
Durham, J. W. 1957. Notes on echinoids. Journal of Paleontology 31, 625-631.
page(s): 626-627; pl. 72: figs. 4, 9-10 [details] Available for editors
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): 74 [details] Available for editors
From editor or global species database
Distribution Guatemala [details]
Fossil Range Early Miocene [details]