Dinosaur DiscoveryThe world during the Cretaceous Period was a very different place to what we know it as today. Dinosaurs reached their peak in diversity and mammals were confined to a life in the shadows. The abrupt end of the Cretaceous, 66 million years ago, changed everything. Authoritative, interactive and entertaining, this guide describes and illustrates the dinosaurs of the Cretaceous era, the amazing environment in which they lived, and how evidence of them