MolluscaBase name details
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): 314, pl. 80, figs 10-11 [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): 82 [details] Available for editors [request]
From editor or global species database
Type locality "Sec. 19, T. 35 N., R. 8 W., Ignacio quadrangle, Colo. (locality 6063), about 300 feet below the top of the 'Laramie', probably in the upper part of the Fruitland formation", USA; Late Cretaceous [details]
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