Geological Timescale
|
Era |
Period |
Epoch |
Age |
|
Cenozoic |
Neogene |
Holocene |
0.0114 |
| Pleistocene |
1.8 |
| Pliocene |
5.3 |
| Miocene |
23 |
|
Palaeogene |
Oligocene |
33.9 |
| Eocene |
55.8 |
| Palaeocene |
65.5 |
|
Mesozoic |
Cretaceous |
Upper |
99.6 |
| Lower |
145.5 |
|
Jurassic |
Upper |
161.2 |
| Middle |
175.6 |
| Lower |
199.6 |
|
Triassic |
Upper |
228 |
| Middle |
245 |
| Lower |
251 |
|
Palaeozoic |
Permian |
Lopingian |
260.4 |
| Guadalupian |
270.6 |
| Cisuralian |
299 |
|
Carboniferous |
Upper |
306.5 |
| Middle |
311.7 |
| Lower |
359.2 |
|
Devonian |
Upper |
385.3 |
| Middle |
397.5 |
| Lower |
416 |
|
Silurian |
Pridoli |
418.7 |
| Ludlow |
422.9 |
| Wenlock |
428.2 |
| Llandovery |
443.7 |
|
Ordovician |
Upper |
460.9 |
| Middle |
471.8 |
| Lower |
488.3 |
|
Cambrian |
Upper |
501 |
| Middle |
513 |
| Lower |
542 |
|
Proterozoic |
Neoproterozoic |
Ediacaran |
630 |
| Cryogenian |
850 |
| Tonian |
1000 |
| Mesoproterozoic |
Stenian |
1200 |
| Ectasian |
1400 |
| Calymmian |
1600 |
| Palaeoproterozoic |
Statherian |
1800 |
| Orosirian |
2050 |
| Rhyacian |
2300 |
| Siderian |
2500 |
|
Archaean |
Neoarchaean |
|
2800 |
| Mesoarchaean |
|
3200 |
| Palaeoarchaean |
|
3600 |
| Eoarchaean |
|
3800 |
|
Hadean |
Lower Imbrian |
|
c.3850 |
| Nectarian |
|
c.3920 |
| Basin Groups |
|
c.4150 |
| Cryptic |
|
c.4570 |
Author: Sarah Vinnell
Last updated: 21/11/05
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Palaeobiology programme in the Department
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Fossil Groups: SciComms 05-06: Earth Sciences
