PALEOPAEDIA
Encyclopedia of Prehistoric Life
Geological Timescale
Cenozoic Era - Age of Mammals
Quaternary
2.6 million years ago - Present
→
Neogene
23 - 2.6 million years ago
→
Paleogene
66 - 23 million years ago
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Mesozoic Era - Age of Reptiles
Cretaceous
145 - 66 million years ago
→
Jurassic
201 - 145 million years ago
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Triassic
252 - 201 million years ago
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Paleozoic Era - Ancient Life
Permian
299 - 252 million years ago
→
Carboniferous
359 - 299 million years ago
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Devonian
419 - 359 million years ago
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Silurian
443 - 419 million years ago
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Ordovician
485 - 443 million years ago
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Cambrian
538 - 485 million years ago
→