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Cretaceous Climate Change Within the Horseshoe Canyon Formation (Drumheller, Alberta) (2007)

(Atrociraptor marshalli, Saurolophus osborni, Hypacrosaurus altispinus, Triceratops-like ceratopsian, tyrannosaurid, crocodile, Basolemys)

Digital illustration

This illustration, for the interpretive sign series entitled "Alberta's Fossil Trail", shows a progression of climate change, from a relatively dry environment to a moist, swampy one in the Horseshoe Canyon formation.