original description
Whiteaves, J.F. (1885). Report on the Invertebrata of the Laramie and Cretaceous rocks of the vicinity of the Bow and Belly Rivers and adjacent localities in the North-West Territory. <em>Contributions to Canadian palaeontology.</em> 1(1): 1-89., available online at https://www.biodiversitylibrary.org/page/38502645
page(s): 3, pl. 1, fig. 1 [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): 88 [details] Available for editors [request]
From editor or global species database
Type locality "Upper Belly River, Alberta, N. W. T., seven miles above the mouth of the Old Man River", Canada; Willow Creek Fm., Maastrichtian-Danian, Late Cretaceous-Paleocene [details]