Note No type locality stated, other than "Abundant...
Type locality No type locality stated, other than "Abundant in the Willow Creek and Edmonton formations, and one specimen was found in the St. Mary River formation" [of southern Alberta, Canada] [details]
basis of recordTozer, E.T. (1956). Uppermost Cretaceous and Paleocene nonmarine molluscan faunas of western Alberta. <em>Geological Survey of Canada, Memoir.</em> 280: 1-125., available online athttps://doi.org/10.4095/101507 page(s): 72, pl. 6, figs 23-26 [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Type locality No type locality stated, other than "Abundant in the Willow Creek and Edmonton formations, and one specimen was found in the St. Mary River formation" [of southern Alberta, Canada] [details]
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