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Geological periods
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Siderian
Rhyacian
Orosirian
Statherian
Calymmian
Ectasian
Tonian
Cryogenian
Ediacaran
Cambrian
Ordovician
Silurian
Devonian
Carboniferous
Permian
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
Quaternary