Geologic Time
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|
Type |
Start (million yrs ago) |
End (million yrs ago) |
Total yrs (millions) |
| Precambrian |
|
4600 |
542 |
4058 |
| Hadeon |
Eon |
4600 |
3800 |
800 |
| Archean |
Eon |
3800 |
2500 |
1300 |
| Proterozoic |
Eon |
2500 |
542 |
1958 |
| Phanerozoic |
Eon |
542 |
251 |
291 |
| Cambrian |
Period |
542 |
488 |
54 |
| Ordovician |
Period |
488 |
443 |
45 |
| Silurian |
Period |
443 |
416 |
27 |
| Devonian |
Period |
416 |
359 |
57 |
| Carboniferous |
Period |
359 |
299 |
60 |
| Permian |
Period |
299 |
251 |
48 |
| Mesozoic |
Era |
251 |
65.5 |
185.5 |
| Triassic |
Period |
251 |
199 |
52 |
| Jurassic |
Period |
199 |
145 |
54 |
| Cretaceous |
Period |
145 |
65.5 |
79.5 |
| Cenozoic |
Era |
65.5 |
0 |
65.5 |
| Paleogene |
Period |
65.5 |
23 |
42.5 |
| Paleocene |
Epoch |
65.5 |
55.8 |
9.7 |
| Eocene |
Epoch |
55.8 |
33.9 |
21.9 |
| Oligocene |
Epoch |
33.9 |
23 |
10.9 |
| Neogene |
Period |
23 |
0 |
23 |
| Miocene |
Epoch |
23 |
5.3 |
17.7 |
| Pliocene |
Epoch |
5.3 |
1.8 |
3.5 |
| Pleistocene |
Epoch |
1.8 |
0.018 |
1.782 |
| Holocene |
Epoch |
0.012 |
0 |
0.012 |
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