MolluscaBase taxon details
original description
Clark, B. L. (1918). The San Lorenzo Series of middle California. A stratigraphic and palaeontologic study of the San Lorenzo Oligocene series of the general region of Mount Diablo, California. <em>University of California Publications, Bulletin of the Department of Geological Sciences.</em> 11(2): 45-234, pls. 3-24., available online at https://www.biodiversitylibrary.org/page/43342287 [details]
basis of record
Hickman, C. S. (1980). Paleogene marine gastropods of the Keasey Formation in Oregon. <em>Bulletins of American Paleontology.</em> 78(310):1-112, 10 pls. [details]