Some Geological Fundamentals

• The fossil record

Before Life Began

The Emergence of Life

Precambrian Life

The Cambrian Explosion and the Origins of Animal Diversity

Paleozoic Life

• The colonization of land
• Paleozoic life on land
• The end-Permian mass extinction

Mesozoic Life

The Cenozoic Era

• The modern world takes shape
• The adaptive radiation of mammals
• Pleistocene events