original description
Tanaka, K. 1965. Cretaceous echinoids from the Sanchu Graben, Central Japan. Transactions and Proceedings of the Palaeontological Society of Japan, New Series 59, 126-142.
page(s): 128-129; pl. 15: figs, 1a-c, 2a-c [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): 76 [details] Available for editors 
From editor or global species database
Distribution Japan [details]
Fossil Range Early Cretaceous [details]