original description
Hall, J. (1845). Descriptions of organic remains collected by Captain J. C. Frémont, in the geographical survey of Oregon and North Californa. In: Frémont, J.C. Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and North California. Gales and Seaton, Washington, pp. 304-310., available online at https://www.biodiversitylibrary.org/page/32560211
page(s): 309, pl. 3, fig. 9 [details]
basis of record
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313.
page(s): 203 [details] Available for editors [request]
status source
Taylor, D. W. (1966). Summary of North American Blancan nonmarine mollusks. <em>Malacologia.</em> 4(1): 1-172, pls 1−8., available online at https://www.biodiversitylibrary.org/page/13147234
page(s): 76 [details]
From editor or global species database
Type locality Originally given as "in longitude 115°, latitude 43°" by Hall (1845), which is likely incorrect. Hartman (2004) stated the locality as follows: Locality L3334, Elmore County, Idaho [USA], Pasadena Valley and Twentymile Butte Quadrangles, 1992, NW 1/4 sec. 28, T. 6 S., R. 11 E.; Glenns Ferry Formation, Pliocene [details]