Description: Sixty-five million years ago, a disastrous cataclysm eliminated three quarters of all life on Earth. Overnight, the age of dinosaurs ended. The age of mammals had begun. But what if history had happened differently? What if the reptiles had survived to evolve intelligent life? Working with a team of scientists -- experts in biology, language, history, and customs -- bestselling author Harry Harrison has created a rich, dramatic saga of a world where the descendants of the dinosaurs struggled with humans like ourselves in a tragic battle for the future of the Earth.

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