Geological Time: Lengths of Eons, Eras and Periods

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20 Terms

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Hadean

4567 - 4000 Ma

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Archaean

4000 - 2500 Ma

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Proterozoic

2500 - 541 Ma

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Phanerozoic

541 - 0 Ma

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Palaeozoic

541 - 252 Ma

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Mesozoic

252 - 66 Ma

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Cenozoic

66 - 0 Ma

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Ediacaran

635 - 541 Ma

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Cambrian

541 - 485 Ma

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Ordovician

485 - 444 Ma

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Silurian

444 - 419 Ma

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Devonian

419 - 359 Ma

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Carboniferous

359 - 299 Ma

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Permian

299 - 252 Ma

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Triassic

252 - 201 Ma

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Jurassic

201 - 145 Ma

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Cretaceous

145 - 66 Ma

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Palaeogene

66 - 23 Ma

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Neogene

23 - 2.6 Ma

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Quaternary

2.6 - 0 Ma