Dinosaurs: Scientists estimate over a

Scientists estimate over a thousand dinosaur species once roamed Earth. Learn which ones were the largest and the smallest, what dinosaurs ate and how they behaved, as well as surprising facts about their extinction. Discover fascinating facts and immerse yourself in the prehistoric era. Walk alongside the dinosaurs through our latest clips, articles, stories, and more. Find out facts about dinosaurs , including Diplodocus and Stegosaurus, and uncover what science is revealing about the appearance and lives of these prehistoric animals. Learn everything about dinosaurs , from their definition and evolution to their extinction and types. Explore lists of dinosaurs by period, see pictures and info, and discover how dinosaurs are related to birds.