After the age of the dinosaurs, strange and powerful mammals ruled the earth.

Describes mammals that survived after the dinosaurs disappeared and how they evolved to the present day

"Learn about some surprising mammals that roamed the Arctic long ago. You might not think of camels, elephants, and lions as Arctic animals, but the ancestors of these animals once roamed the North long ago"--Provided by publisher.

"Simple text and illustrations describe Megalania, how they lived, and how they became extinct"--Provided by publisher.

"From the author of Apocalyptic Planet, an unsparing, vivid, revelatory travelogue through prehistory that traces the arrival of the First People in North America twenty thousand years ago and the artifacts that enable us to imagine their lives and fates. Scientists squabble over the locations and dates for human arrival in the New World. The first explorers were few, encampments fleeting. At some point in time, between twenty and forty thousand years...