Contains Six small hardcover die cut books.

Life on Earth began about 3.5 billion years ago. For the first 2.5 billion years, there were only simple, single-cell bacteria. About 1,000 million years ago the first complex cells with a nucleus appeared. About 500 million years later, multi-celled animals with legs and eyes appeared. 250 million years ago dinosaurs ruled the Earth until they died out some 65 million years ago.