Contact: Kendra Snyder
American Museum of Natural History
Caption: Like other meat-eaters analyzed in the new research, Troodon formosus, a coelurosaur, maintained a stable level of biodiversity leading up to the mass extinction at the end of the Cretaceous.
Credit: AMNH/J. Brougham
Usage Restrictions: Can be used as long as appropriate credit is given.
Related news release: Were dinosaurs undergoing long-term decline before mass extinction?