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Geologic Time Scale
Geologic Time Scale (Eon, Era, Period, System)
| Term | Definition |
|---|---|
| Cenozoic | 65.5 mya - present |
| Mesozoic | 251.0 - 65.5 mya |
| Paleozoic | 542.0 - 251.0 mya |
| Precambrian | 4600 - 542 mya |
| Proterozoic | 2500 - 542 mya |
| Archean | 4000 - 2500 mya |
| Hadean | 4600 - 4000 mya |
| Phanerozoic | 542.0 mya - present |
| Quaternary | 2.6 mya - present |
| Holocene | 0.01 yrs - present |
| Pleistocene | 2.6 mya - 0.01 yrs |
| Neogene | 23.0 - 2.6 mya |
| Pliocene | 5.3 - 2.6 mya |
| Miocene | 23.0 - 5.3 mya |
| Paleogene | 65.5 - 23.0 mya |
| Oligocene | 33.9 - 23.0 mya |
| Eocene | 55.8 - 33.9 mya |
| Paleocene | 65.5 - 55.8 mya |
| Cretaceous | 145.5 - 65.5 mya |
| Upper Cretaceous | 99.6 - 65.5 mya |
| Lower Cretaceous | 145.5 - 99.6 mya |
| Jurassic | 199.6 - 145.5 mya |
| Upper Jurassic | 161.2 - 145.5 mya |
| Middle Jurassic | 175.6 - 161.2 mya |
| Lower Jurassic | 199.6 - 175.6 mya |
| Triassic | 251.0 - 199.6 mya |
| Upper Triassic | 228.7 - 199.6 mya |
| Middle Triassic | 245.9 - 228.7 mya |
| Lower Triassic | 251.0 - 245.9 mya |
| Permian | 299.0 - 251.0 mya |
| Lopingian | 260.4 - 251.0 mya |
| Guadalupian | 270.6 - 260.4 mya |
| Cisuralian | 299.0 - 270.6 mya |
| Carboniferous | 359.2 - 299.0 mya |
| Pennsylvanian | 318.1 - 299.0 mya |
| Upper Pennsylvanian | 307.2 - 299.0 mya |
| Middle Pennsylvanian | 311.7 - 307.2 mya |
| Lower Pennsylvanian | 318.1 - 311.7 mya |
| Mississippian | 359.2 - 318.1 mya |
| Upper Mississippian | 328.3 - 318.1 mya |
| Middle Mississippian | 345.3 - 328.3 mya |
| Lower Mississippian | 359.2 - 345.3 mya |
| Devonian | 416.0 - 359.2 mya |
| Upper Devonian | 385.3 - 359.2 mya |
| Middle Devonian | 397.5 - 385.3 mya |
| Lower Devonian | 416.0 - 397.5 mya |
| Silurian | 443.7 - 416.0 mya |
| Pridoli | 418.7 - 416.0 mya |
| Ludlow | 422.9 - 418.7 mya |
| Wenlock | 428.2 - 422.9 mya |
| Llandovery | 443.7 - 428.2 mya |
| Ordovician | 488.3 - 443.7 mya |
| Upper Ordovician | 460.9 - 443.7 mya |
| Middle Ordovician | 471.8 - 460.9 mya |
| Lower Ordovician | 488.3 - 471.8 mya |
| Cambrian | 542.0 - 488.3 mya |
| Furongian | 499 - 488.3 mya |
| Series 3 | 510 - 499 mya |
| Series 2 | 521 - 510 mya |
| Terreneuvian | 542.0 - 521 mya |
| Neoproterozoic | 1000 - 542.0 mya |
| Mesoproterozoic | 1600 - 1000 mya |
| Paleoproterozoic | 2500 - 1600 mya |
| Neoarchean | 2800 - 2500 mya |
| Mesoarchean | 3200 - 2800 mya |
| Paleoarchean | 3600 - 3200 mya |
| Eoarchean | 4000 - 3600 mya |
| Ediacaran | 630 - 542 mya |
| Cryogenian | 850 - 630 mya |
| Tonian | 1000 - 850 mya |
| Stenian | 1200 - 1000 mya |
| Ectasian | 1400 - 1200 mya |
| Calymmian | 1600 - 1400 mya |
| Statherian | 1800 - 1600 mya |
| Orosirian | 2050 - 1800 mya |
| Rhyacian | 2300 - 2050 mya |
| Siderian | 2500 - 2300 mya |
| Tertiary | 65.5 - 2.6 mya |
Created by:
bizz1441
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