The nomenclature of the post-Kneehills strata is revised by placing the lower boundary of the Paskapoo Formation at the top of the Kneehills Member (Battle Formation) of the Edmonton Formation in central Alberta. The redefined Paskapoo Formation thus becomes equivalent to the Willow Creek Formation of southwestern Alberta and now includes the Lance-equivalent beds and the Cretaceous-Tertiary transition. Evidence is presented to show that the Porcupine Hills Formation is much more extensive than formerly mapped and that it overlies the Paskapoo Formation in the vicinity of Calgary.

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