Hadean, Archean, Proterozoic, Phanerozoic, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous, Paleogene, Neogene, Quaternary, Paleozoic, Mesozoic, Cenozoic.

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