Contact: Kendra Snyder
American Museum of Natural History
Caption: Tyrannosaurus rex, shown in this artistic illustration, is part of the carnivorous groups of dinosaurs that, according to new research, 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?