original description
Morishita, A. 1953. On Some Neogene Echinoids from Nagano Prefecture, Japan. Memoirs of the College of Science, University of Kyoto B 20, 217-226.
page(s): 218-219; fig. 2, pl. 1: figs. 1-2 [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): 65 [details] Available for editors
From editor or global species database
Distribution Japan [details]
Fossil Range Middle Miocene [details]
Stratigraphy Early part of Aoki Formation [details]