Which Canadian park contains a rich assemblage of Late Cretaceous dinosaur fossils?

The Canadian park containing a rich assemblage of Late Cretaceous dinosaur fossils is Dinosaur Provincial Park.

The park lies in Alberta’s Red Deer River valley, near the city of Brooks. Its exposed badlands preserve sediments deposited during the Campanian stage of the Late Cretaceous, roughly 76.5 to 74.8 million years ago. Rivers, floodplains, and coastal-plain environments created conditions that buried and preserved an unusually diverse ancient ecosystem.

Dinosaur Provincial Park is among the world’s richest dinosaur fossil sites. Scientists have identified dozens of dinosaur species there, including horned dinosaurs, duck-billed dinosaurs, tyrannosaurs, ankylosaurs, and small theropods. The fossil record also includes fish, turtles, crocodilians, mammals, plants, pollen, and spores, allowing researchers to reconstruct more than just the dinosaurs themselves.

The park became a UNESCO World Heritage Site in 1979. It is often confused with Alberta’s Royal Tyrrell Museum, which is a museum rather than the fossil-bearing park itself, or with Banff and Jasper national parks, whose main distinction is Rocky Mountain scenery rather than this exceptionally concentrated dinosaur assemblage.