"Take a trip through a strange new world where flightless terror birds as tall as a man kill with a single snap of their powerful beaks. Early ancestors of man struggle for power and territory as they try to defend themselves from the famous saber-toothed tiger. And even the saber-tooth cannot take on the glyptodon, the massive two-ton armadillo that is the most heavily armored mammal ever. It's an extraordinary trip through history and evolution that begins with the end of the dinosaurs and ends with the rise of even more mysterious creatures: the first humans."--Container.