Travel back in time to the age of dinosaurs. Explore a completely different and exciting prehistoric world, when dinosaurs dominated our planet. Discover more about the many species of dinosaurs - from the mighty Tyrannosaurus to those the size of a pigeon. Learn about the various causes that might have led to the extinction of the powerful dinosaurs. Finally, see how scientists learn about dinosaurs and other prehistoric animals through fossils. This book contains beautiful photographs and many exciting fact inserts that make reading much more fun.