A look at the history of life on Earth starts in the present and goes back hundreds of millions of years to the Ediacaran Period, profiling the creatures that existed at each time.

Explains how scientists think saber-toothed cats lived, hunted, and became extinct. Back matter explores other large-toothed predators and provides additional print, visual, and web resources.

"Welcome to the land of giants! Journey across forests, plains, and seas, from the depths of time to the modern day, to discover the colossal beasts that have roamed the Earth. Feast your eyes of fearsome dinosaurs, mighty mammoths, and the biggest lizard that ever lived. Uncover a beaver the size of a bear, a giant bird that towered ten feet tall, and a terrifying pterosaur that gobbled baby dinosaurs for breakfast!"--Page 4 of cover.

"Packed with tips, tricks, and helpful maps, this is the ultimate handbook for dinosaur fans who want to know what life on Earth was really like when dinos ruled."--

"Travel back to the time of dinosaurs and marvel at the wonders of prehistoric life! From the Tyrannosaurus rex and saber-toothed cats, to woolly mammoths and ferns, this dinosaur book for kids is packed with a collection of amazing plants, dinosaurs and prehistoric animals. Every page will captivate young readers who are interested in fossils and natural history! Inside the pages of this dinosaur encyclopedia, you'll discover: A captivating story...

"Viaja hasta los inicios de la vida en la Tierra y descubre más de 90 increíbles plantas y animales. Tyranosaurus, mamuts, tigres dientes de sable, megalodones, lobos gigantes, plantas de 100 metros de alto... Cada página de este libro te mostrará las extrañas criaturas que vivían en nuestro planeta. Detalladas fotografías de fósiles, asombrosas ilustraciones y explicaciones entretenidas te invitan a conocer el mundo prehistórico que aún...