Terms

Geological Periods

Geological Periods The periodization is taken from Wiki. An earlier estimate had a slightly different periodization: GEOLOGICAL PERIODS Quaternary Recent Pleistocene 1 million years Tertiary Pliocene 13 Miocene 26 Oligocene 38 Eocene 58 Paleocene 63 Cretaceous 135 Jurassic 181 Triassic 230 Permian 280 Pennsylvanian 310 Mississippian 345 Devonian 345 Silurian 405 Ordovician 500 Precambrian 600
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