Geologic Time

The Making of Mass Extinctions

Research

History of Life on Earth - BBC

History of the Earth - Nat Geo (youtube)

All Time Periods (Scroll down to get links to all time periods)

Cenozoic

Quaternary (2mya-present)

Tertiary (65 -2 mya)

Mesozoic

Cretaceous (145-65 mya)

Jurassic (200-145 mya)

Triassic (250-200 mya)

Paleozoic

Permian(300-250 mya)

Carboniferous (360-300 mya)

Devonian (420- 360 mya)

Silurian (445-420 mya)

Ordovician (490 - 445 mya)

Cambrian (540-490 mya)

Precambrian ( 4,500-540 mya)

Continental Drift Over the Earth's History

Earthly Universe- Time Periods