An introduction to stegosaurus dinosaurs, explaining what they looked like, how they lived, and when they became extinct. Presented in English and Spanish.
Presents, in English and Spanish text, an introduction to the Tyrannosaurus rex, a dinosaur that existed on Earth about seventy million years ago, describing its appearance, behaviors, and where it lived.
Presents a children's book for early readers that describes the American mastodon, what it looked like, where and how it lived, and when it became extinct.
