original description
Nagao, T. (1928). Palaeogene fossils of the Island of Kyûshû, Japan, Part II. <em>Science Reports of the Tôhoku Imperial University, 2nd Series, Geology.</em> 12(1): 11-140, pl. 1-17.
page(s): 18; pl. 1: figs. 1-4 [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): 108 [details] Available for editors
From editor or global species database
Distribution Japan [details]
Fossil Range Palaeogene [details]