Scollard Formation

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Scollard Formation exposed along the Red Deer River, Alberta. The Tyrannosaurus rex skeleton on display at the Royal Tyrrell Museum of Palaeontology was excavated in the center of image.
Scollard Formation exposed along the Red Deer River, Alberta. The Tyrannosaurus rex skeleton on display at the Royal Tyrrell Museum of Palaeontology was excavated in the center of image.

The Scollard Formation is an Upper Cretaceous to lower Palaeocene rock formation found in south-central Alberta, Canada. The Scollard outcrops extensively along the banks of the Red Deer River in the area of Trochu, Alberta, where it is found just below prairie level. The Scollard Formation unconformably overlies the Whitemud and Battle Formations, which in turn overlay the Early Maastrichtian Horseshoe Canyon Formation. The lower sections contain dinosaur remains, including Tyrannosaurus, Triceratops, Leptoceratops, Ankylosaurus, Edmontosaurus, Thescelosaurus, and Ornithomimus. These strata are equivalent in age to the Hell Creek Formation of Montana, the Lance Formation of Wyoming, and the Frenchman Formation of Saskatchewan. The Cretaceous-Tertiary boundary is found just below the first coal seam in the Scollard, and the rocks above this layer are Palaeocene in age.