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Paleozoic Era- Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian

Mass Extinction (Permian-Tertiary) 248 mya

Mesozoic Era- Triassic, Jurassic, Cretaceous

Mass Extinction (K-T) 65 mya

Cenozoic- Tertiary, Quaternary

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∙ 14y ago
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