original description
Morishita, A. 1962. Cretaceous Echinoid Hemiaster from Shikoku Japan. Number II in On Some Fossil Echinoids of Japan. The Journal of Earth Sciences Nagoya University 102, 113-116.
page(s): 114-115; pl. 1: figs. 1-7 [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): 100 [details] Available for editors
From editor or global species database
Distribution Shikoku, Japan [details]
Fossil Range Late Cretaceous [details]
Stratigraphy upper part of Yoshida Group [details]