New from the author of acclaimed bestseller The Rise and Fall of the Dinosaurs ("A masterpiece of science writing" —Washington Post) and “one of the stars of modern paleontology” (National Geographic), a sweeping and revelatory history of mammals, illuminating the lost story of the extraordinary family tree that led to us We humans are the inheritors of a dynasty that has reigned over the planet for nearly 66 million years, through fiery cataclysm and ice ages: the mammals. O