Mesozoic Ecosystems

Length: 51 minutes. Montana is famous for its Hell Creek Formation, the geologic unit that represents the very end of the Mesozoic Era and the last non-avian dinosaurs including T. rex and Triceratops. These famous dinosaurs lived in an ecosystem filled with life, including other animals and plants. Explore the dinosaurs, other animals, and plants from the Hell Creek Formation and discover how scientists use fossil evidence to understand ecosystems of the Mesozoic Era.