Robert Bakker illustrates the new and unprecedented wave of dinosaur discoveries around the world, while David J Varicchio discusses the familial relationships of dinosaurs. Walter Alvarex and Vincent Courtillot debate their theories of mass extinction, and Ken Carpenter describes the latest technologies and basic techniques of excavating fossils. Together, they provide a detailed impression of what life was like for the thunder lizards: what they looked like, how they acted and interacted, what they ate, where they lived, and how they died. With a sharp, accessible design and loads of illustrations, this book is truly something to roar about.