Horseshoe Canyon Formation

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The Horseshoe Canyon Formation is part of the Edmonton Series and is up to 230m in depth. It is Maastrichtian and is composed of mudstone, sandstone, and carbonaceous shales. There is a variety of environments, which have yielded a rich diversity of fossil material.

Dinosaurs found in the Horseshoe Canyon Formation include Albertosaurus, Anchiceratops, Anodontosaurus, Arrhinoceratops, Aublysodon, Chirostenotes, Daspletosaurus, Dromiceiomimus, Edmontonia, Edmontosaurus, Euoplocephalus, Hypacrosaurus, Ornithomimus, Pachyrhinosaurus, Panoplosaurus, Parksosaurus, Saurolophus, Saurornitholestes, Stegoceras, Struthiomimus and Troodon. Other finds have included mammals, non-dinosaur reptiles, amphibians, fish, marine and terrestrial invertebrates and plant fossils.

Horseshoe Canyon itself is located 17 km southwest of Drumheller, Alberta, Canada, on Highway 9. This Canyon gets its name from its horseshoe shape and is approximately 3 km long, extending from Highway 9 to Kneehill Creek area.