Walking with Beasts

15 million years after the end of the Age of Dinosaurs, Earth has recovered from the massive meteor impact. Rainforests dominated the early Eocene, and the planet has a warm, trop...

The late Eocene is a time of great change, but not a pleasant one for Earth's life form. Antarctica has separated from the other continents and is slowly freezing, changing the oc...

It is now the Oligocene period, and the massive change in climate claimed 1 in every 5 species. The great tropical forests and plains that dominated the Eocene have shrunk, hangin...

The Pliocene has arrived, and the world is taking on its familiar shape. In the Great Rift Valley of Africa, the animals are taking familiar forms, though some exotic forms are wo...

South America is a land time forgot, with giant birds, the last of a trunked, hoofed herbivore, huge sloths, and giant armadillos. But the isolation of this continent has ended; a...

The Ice Age has arrived, putting life in the freezer. It is at this time when great herds of Woolly Mammoths live on the plains of what will eventually be the North Sea. As winte...