In this seventh book in the Wow! series, you’ll discover the earliest history of our planet. For time travelers ages 6 years and up.Millions of years ago, the dinosaurs dominated life on Earth. They’re the most spectacular animals that ever lived. Believe it or not, though, before the dinosaurs, life on Earth might have looked even more wondrous. Land animals were many feet high, some wore big sails on their backs, forests consisted of gigantic moss trees, and fish developed into all-devouring monsters. Welcome to the unbelievable history of our Earth.