original description
Maldonado-Koerdell, M. 1953. Los equinoides regulares de Mesozoico de México. Aales de la Escuela Nacional de Ciencias Biologicas 7 1-4, 15-43.
page(s): 38-39; pl. 2: figs. 38-40 [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): 37 [details] Available for editors 
From editor or global species database
Distribution Mexico [details]
Fossil Range Aptian, Early Cretaceous [details]