GEOLOGIC TIME SCALE
The years listed are for the beginning of that time period. Example: the Permian began 299 million years ago. Dates represent the official 2009 Geologic Time Scale dates published by the Geological Society of America
|
Era |
Period |
|
Epoch |
mya |
|
|
Quaternary |
|
Holocene |
0.01 |
|
|
|
|
Pleistocene |
2.6 |
|
Cenozoic |
|
Neogene |
Pliocene |
5.3 |
|
|
|
|
Miocene |
23.0 |
|
|
Tertiary |
|
Oligocene |
33.9 |
|
|
|
Paleogene |
Eocene |
55.8 |
|
|
|
|
Paleocene |
65.5 |
|
|
Cretaceous |
|
|
145.5 |
|
Mesozoic |
Jurassic |
|
|
201.6 |
|
|
Triassic |
|
|
251 |
|
|
Permian |
|
|
299 |
|
|
Carboniferous |
|
Pennsylvanian |
318 |
|
|
|
|
Mississippian |
359 |
|
Paleozoic |
Devonian |
|
|
416 |
|
|
Silurian |
|
|
444 |
|
|
Ordovician |
|
|
488 |
|
|
Cambrian |
|
|
542 |
|
Precambrian |
|
|
|
4600 |