original description
Russell, L.S. (1956). Nonmarine Mollusca from the North Park Formation of Saratoga Valley, Wyoming. <em>Journal of Paleontology.</em> 30(5): 1260-1263.
page(s): 1260, textfig. 1 [details] Available for editors [request]
From editor or global species database
Type locality From the dissected side of a terrace on the North Platte River, Carbon County, Wyoming, United States; Barstovian, middle Miocene [details]