Find out how the enormous, plant-eating Apatosaurus gained the name 'deceptive lizard.' Learn what role it played in 'The Great Bone Wars' of the 1870s. Follow the many changing theories surrounding Apatosaurus, and come up with your own ideas about what life was like for this strange and mysterious dinosaur! Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section, and an overview of the geologic time scale.