This beautifully illustrated reference book is essential reading for every child with an interest in dinosaurs. Discover amazing facts about these incredible beasts, from the compact Compsognathus to the towering Brachiosaurus. Find out which dinosaur weighed as much as twenty elephants, and how Stegosaurus had a brain as tiny as your thumb. Learn about flying reptiles such as Quetzalcoatlus and undersea monsters like the giant predator Liopleurodon. The thematically written text answers many of the questions that children ask, such as "what were dinosaurs really like?" and "why did the dinosaurs die out?" Expertly written, this book reveals the mysteries of how these animals dominated the planet Earth for 160 million years.