Abstract
Lateral impressions of ammonites are described from three levels in shales of the Ribbon Creek Member (Fernie Formation) at Adanac Pass, southern Alberta. The occurrence of Kepplerites cf. costidensus (Imlay) and Kepplerites subitus (Imlay) with East Pacific forms belonging to Xenocephalites and Lilloettia indicates correlation with the upper Bathonian of the Boreal sequence.
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