Russell, L.S. (1931). Mollusca from the Upper Cretaceous and Lower Tertiary of Alberta. Transactions of the Royal Society of Canada, third series. Section IV - Geological Sciences. 25: 9-19.
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Russell, L.S.
1931
Mollusca from the Upper Cretaceous and Lower Tertiary of Alberta
Transactions of the Royal Society of Canada, third series. Section IV - Geological Sciences