Pangaea, Supercontinent
Pangaea or Pangea is the name given to the supercontinent that existed during the Paleozoic and Mesozoic eras about 250 million years ago, before the process of plate tec...
MESOZOIC : Age of Dinosaurs
The Mesozoic is known as the Age of Dinosaurs. It also saw the development of early birds and mammals, and of flowering plants (angiosperms). At the end of the Mesozoic,...
Walking with Dinosaurs
BBC Online : A multimedia tour of prehistoric life. Find out what the earth was like 65-220 million years ago. Discover the planet, the plants and the dinosaurs....
Aztec history overview and timeline
The center of the Aztec civilization was the Valley of Mexico, a huge, oval basin about 7,500 feet above sea level. The Aztec empire included many cities and towns, espec...
