Overview of the Earth in the Devonian Period told by photos, news, and external links with an emphasis on what grew and lived then, the causes of mass extinction, types of fossils, and what life was like in general.

The Jurassic Period falls within the Mesozoic Era. Read about geologic events that occurred then, the climate, and the plants and animals, including the many types of dinosaurs.

This resource provides basic information of the changes that took place during the Permian period as well as the animals that populated the Earth during this time.

This illustrated timeline from the Lunar and Planetary Institute provides a journey through four-and-a-half billion years of time from the birth of our solar system to its current existence today.

Explains the importance of index fossils for the dating and chronology of events in the fossil and geological records. Discusses uses and examples of index fossils in the Cenozoic, Mesozoic, and Paleozoic Eras.

Located in a strange lunar landscape of great geological interest, this site has one of the most important groupings of prehistoric cave art in the world. More than 15,000 drawings and engravings record the climatic changes, the animal...