, Note "Snow Creek, on the Missouri River, about 130...
Type locality "Snow Creek, on the Missouri River, about 130 miles northwest of Miles City, Montana", USA; Laramie Fm., Maastrichtian, Late Cretaceous [details]
basis of recordHenderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313. page(s): 86 [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality
Type locality "Snow Creek, on the Missouri River, about 130 miles northwest of Miles City, Montana", USA; Laramie Fm., Maastrichtian, Late Cretaceous [details]
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