original description
Pilsbry, H. A. (1935). Mollusks of the fresh-water Pliocene beds of the Kettleman Hills and neighboring oil fields, California. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 86: 541-570. Philadelphia.
page(s): 555, pl. 21, fig. 1 [details] Available for editors [request]
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): 202 [details] Available for editors [request]
From editor or global species database
Type locality West side of Santa Clara Valley near Los Gatos, elevation about 800 ft., California, United States; Santa Clara Formation, early Pleistocene [details]