original description
Cooper, J. G. (1894). Catalogue of Californian Fossils (parts II, III, IV, and V). <em>California State Mining Bureau Bulletin.</em> 4: 1-65, 6 pls.
page(s): 44, pl. 1, figs 14-19 [details]
basis of record
Hanna, M. A. (1927). An Eocene invertebrate fauna from the La Jolla quadrangle, California. <em>University of California, Publications in Geological Sciences.</em> 16(8): 247-398, pls. 24-57., available online at https://babel.hathitrust.org/cgi/pt?id=mdp.39015027552804&seq=253
page(s): 312, pl. 55, figs 2, 7, 9 [details]
From editor or global species database
Type locality Head-wall of "California Coal Mine," near Huron, Fresno County, east slope of Mt. Hamilton range (California, USA) [details]