Dinosaurs have long been a source of speculation. This beautifully illustrated guide includes:- Fascinating facts about these animals that ruled the earth for more than 100 million years- Key features that make each individual genus distinctive- The latest information about how dinosaurs evolved and why they became extinctDinosaurs is an indispensable reference for everyone intrigued by these mighty creatures. | Dinosaurs by Eugene S. Gaffney, Paperback | Indigo Chapters