Drawings and brief text describe a variety of prehistoric animals.

Introduces, in text and illustrations, a variety of prehistoric animals whose fossilized remains have provided scientists with clues about their physical characteristics and the environment in which they lived.

Presents the names, physical characteristics, and places of origin of a variety of extinct animals, arranged chronologically into eras, periods, and epochs, and discusses times of mass extinction.

Looks at the expedition by the Burpee Museum of Natural History as they hunted for fossils in Montana and their discovery of a Tyrannosaur rex named Jane.