original description
Israelsky, M. C. 1933b. Echinoids from the Malumbang Formation Philippine Islands. The Philippine Journal of Science 50, 301-307.
page(s): 305; pl. 2: figs. 13-16 [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): 65 [details] Available for editors
From editor or global species database
Distribution Philippine Islands [details]
Fossil Range Pliocene [details]