Biostratigraphy and palaeontology of the Scollard Formation, late Cretaceous and Paleocene of Alberta
1987
Russell, Loris S.
The Scollard Formation is the uppermost division of the Edmonton Group, exposed in the valley of Red Deer River, Alberta, north of Drumheller and east of Red Deer. The lower portion of the formation contains fossil vertebrates, including dinosaurs and mammals that correlate with those of the Lance Formation of Wyoming and the Hell Creek Formation of Montana. The highest stratigraphic occurrence of this fauna is at the Henry Farm locality, west of Content Bridge, where a wide range of vertebrates is represented by isolated teeth and bones. This occurrence is well below the Ardley coal seam. Above this seam is a shell bed containing a fauna of freshwater molluscs, ostracods, and fish remains. The molluscs correlate with those of the Paskapoo and other nonmarine Paleocene formations, but one species is known elsewhere only from Cretaceous deposits. This fauna is assigned to the early Paleocene. On the basis of the highest occurence of dinosaur fossils, the Cretaceous-Tertiary boundary is taken to be about 11 m below the Ardley coal seam and about 20 m below the shell bed.
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