Get ready to discover thrilling pictures from the long-ago days when dinosaurs ruled the earth! These illustrations of giant hunters and gentler creatures ― some of them no bigger than chickens ― are based on up-to-date scientific discoveries. Each ready-to-color drawing is accompanied by a caption that's loaded with fun facts about where the dinosaurs lived, what they ate, and how they adapted to their environment. Along with familiar prehistoric animals like T. rex and Stegosaurus , you'll meet plenty of less-famous but equally fascinating dinosaurs, marine reptiles, and fish.