The extinction of the dinosaurs 65 million years ago was the signal for another group of animals to move towards world dominance – the mammals. And they grew more intelligent – culminating, we like to think, in the evolution of the human race. This book, the follow-up to our 192pp National Geographic Society Dinosaurs, tells the story of prehistoric mammals. The artist Mauricio Antón, a leading scientific illustrator, is producing more than twenty stunning double-page scenes to illustrate animals in their habitats.