original description
Hannibal, H. (1912). A synopsis of the recent and Tertiary freshwater Mollusca of the Californian province, based upon an ontogenetic classification. <em>Proceedings of the Malacological Society of London.</em> 10(2): 112-166, pls 5-6; 10(3): 167-211, pls 7-8., available online at http://biodiversitylibrary.org/page/15237075
page(s): 161, pl. 6, fig. 16, pl. 8, fig. 34 [details]
From editor or global species database
Type locality Hill near Hawthorne on Belmont stage road, Nevada, United States; Truckee Formation, late Miocene [details]