The Evidence goes beyond the fascinating material in Walking with Dinosaurs, the best-selling book that accompanied the phenomenally successful TV series. The Evidence covers the methods of the research processes that formed the backbone of the series. How was the information obtained, what suppositions have been made, and how did this translate to the programs? Around 250 million years ago dinosaurs first began to walk the earth, dominating the planet until their extinction 65 million years ago. In this incredible Mesozoic period lasting 170 million years, these creatures were the dominant animals on land. Walking with Dinosaurs-The Evidence explores the archeologists' and scientists' discoveries and shows how they piece together the lives of these fascinating creatures. Comprehensively illustrated, the book explains how the bones of dinosaurs and the ground in which they're found in can lead to conclusions about feeding habits, movement, mating, habitat, and the climate of the time.