original description
Weaver, C. E. 1942. Palaeontology of marine Tertiary formations of Oregon and Washington. University of Washington Publications in Geology 5, 1-268.
page(s): 6; pl. 3: figs. 7-8 [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): 69 [details] Available for editors
From editor or global species database
Distribution U.S.A [details]
Fossil Range Middle Miocene [details]
Stratigraphy Astoria Formation [details]