This early encyclopedia introduces readers to a variety of dinosaurs that once roamed Earth. From the massive Tyrannosaurus rex to the tiny Anchiornis, each now-extinct creature was special in its own way. This book highlights each dinosaur's appearance and behavior. It also features a timeline showing when the dinosaur lived. Features include a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Early Encyclopedias is an imprint of Abdo Reference, a division of ABDO. Many interesting and important animals have lived on Earth. In the Early Animal Encyclopedias series, learn about dinosaurs both big and small that once roamed the land. Explore how different dog and cat breeds can look and act. Learn how horses are used for both work and fun. Understand the importance of many different farm animals. And dive into the ocean's depths to see the exciting lives of sharks. This encyclopedia set is sure to give readers all they need to know about their favorite animals. Book jacket.