original description
Stanton, T.W. (1916). Nonmarine Cretaceous invertebrates of the San Juan Basin. <em>United States Geological Survey Professional Paper.</em> 98-R: 309-326., available online at https://pubs.usgs.gov/pp/0098r/report.pdf
page(s): 313, pl. 80, figs 8-9 [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): 81-82 [details] Available for editors [request]
From editor or global species database
Type locality "From Bauer's locality 14, in Amarillo Canyon, 10 miles south of Jewett, N. Mex. (locality 9270), 115 to 140 feet above the base of the Fruitland formation", USA; Campanian, Late Cretaceous [details]