AGES EXPLAINED
Major Era |
Geologic Time |
How Many Years Ago? |
Cenozoic |
Recent |
0 - 9 Thousand Years |
Pleistocene |
10 Thousand - 1.5 Million Years |
|
Pliocene |
1.5 - 5 Million Years |
|
Miocene |
5 - 23 Million Years |
|
Oligocene |
23 - 33 Million Years |
|
Eocene |
33 - 56 Million Years |
|
Paleocene |
55 - 65 Million Years |
|
Mesozoic |
Cretaceous |
65 - 140 Million Years |
Jurassic |
140 - 220 Million Years |
|
Triassic |
220 - 245 Million Years |
|
Paleozoic |
Permian |
245 - 285 Million Years |
Carboniferous |
285 - 360 Million Years |
|
Devonian |
360 - 408 Million Years |
|
Silurian |
408 - 438 Million Years |
|
Ordovician |
438 - 500 Million Years |
|
Cambrian |
500 - 550 Million Years |
|
Pre-Cambrian |
550 Million - 4.8 Billion Years |
For a much more concise time chart please visit the U.C. Berkeley website.
