After the age of the dinosaurs, strange and powerful mammals ruled the earth. . . . Paleontologist Charlotte Lewis Brown's easy-to-read and fascinating descriptions of these ancient animals are brought to life in Phil Wilson's detailed illustrations. Read about the largest mammal ever to walk on land, about a tiger with teeth longer than your hand, and about a horse the size of a dog! Mammals--some strange and some strangely familiar--ruled the earth after the dinosaurs. These compelling creatur ...