Everyone knows that Tyrannosaurus rex is the huge dinosaur with sharp claws and tiny arms. But in this Level Two LRFO from acclaimed science writer Melissa Stewart, you'll learn that T. rex is not the only tyrannosaur that existed in prehistoric times. In the last fifteen years, scientists have found many tyrannosaurs, including one with a really long pointy nose. The coauthor of this book, Dr. Steve Brusatte, went to China in order to help ID the dinosaur that he would give the nickname Pinocchio Rex! This book is the perfect overview of the exciting new discoveries in the land of tyrannosaurs. Read and find out how tyrannosaurs evolved-from the tiny Dilong to the enormous T. rex. The book also includes an infographic, activity, and glossary, as well as Dr. Steve Says sidebars that give readers insight into what it felt like for Dr. Steve to be involved with the discovery of P. Rex! This is a Level 2 Let's-Read-and-Find-Out Science title, which means the book explores more challenging concepts for children in the primary grades and supports the Common Core Learning Standards, Next Generation Science Standards, and the Science, Technology, Engineering, and Math (STEM) standards. Let's-Read-and-Find-Out is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.