SynopsisThis comprehensive guide contains more than 280 full color illustrations that provide a visual catalog of early reptiles, dinosaurs, and their ancestors. Detailed information tells you what key species looked like, and where and how they lived. Maps of the world show you what the planet was like when the dinosaurs ruled the Earth., These comprehensive guides contain more than 350 full-color, beautifully detailed illustrations that provide a visual catalog of the many dinosaurs that once roamed the Earth.