original description
Nisiyama, S. 1966. The Echinoid Fauna from Japan and adjacent Regions. Part I. Paleontological Society of Japan, Special Papers 11, i-ii, 1-277 .
page(s): 199-201; pl. 2: figs. 14-17, pl. 3: figs. 1-4 [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): 35 [details] Available for editors
[request]
From editor or global species database
Distribution Japan [details]
Fossil Range Lutetian, Late Eocene [details]