D. M. Loranger, 1954. "Useful Blairmore Microfossil Zone in Central and Southern Alberta, Canada", Western Canada Sedimentary Basin: A Symposium; Sponsored by the Alberta Society of Petroleum Geologists, and the Saskatchewan Society of Petroleum Geologists, Leslie M. Clark
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The Lower Cretaceous of the central and southern Alberta plains and the central foothills area contains a rich assemblage of ostracodes and charophytes. This zone is useful in correlating strati- grapbic sections from the foothills to the plains area and can also be used as a mappable horizon in the oil fields. Twenty-three of the most commonly occurring species belonging to ten genera are figured and described.