original description
Nisiyama, S. 1937. A New species of Sisomondia from the Oligocene of Titi-zima. Proceedings of the Imperial Academy 13, 41-45.
page(s): 41-45; figs. 1-13 [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): 66 [details] Available for editors
From editor or global species database
Distribution Bonin Islands, Japan [details]
Fossil Range Oligocene [details]