Contact: Kendra Snyder
American Museum of Natural History
Caption: This cross-section of a duck-billed dinosaur tooth (Edmontosaurus) shows the remarkably complex architecture. Six main tissues compose the tooth, where most reptiles only have two (enamel and orthodentine). Like horse, bison, and elephant teeth, the myriad of tissues--each with their own unique wear attributes--allowed the teeth to self-wear with use to form complex grinding surfaces. These dinosaurs possessed among the most sophisticated teeth known.
Credit: G. M. Erickson/Florida State University
Usage Restrictions: Can be used with appropriate credit
Related news release: Duck-bill dinosaurs had plant-pulverizing teeth more advanced than horses