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.