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Geologic Ages. Times of deep time. Eons. present. Phanerozoic. 543 Ma. Proterozoic. 2500 Ma. Archean. 3800 Ma. Eras. Phanerozoic. Cenozoic. Proterozoic. Mesozoic. Archean. Paleozoic. Eras. present. Cenozoic. 65 Ma. Mesozoic. 248 Ma. Paleozoic. 543 Ma. Periods. Permian.
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Geologic Ages Times of deep time
Eons present Phanerozoic 543 Ma Proterozoic 2500 Ma Archean 3800 Ma
Eras Phanerozoic Cenozoic Proterozoic Mesozoic Archean Paleozoic
Eras present Cenozoic 65 Ma Mesozoic 248 Ma Paleozoic 543 Ma
Periods Permian Cenozoic Carboniferous Devonian Mesozoic Silurian Paleozoic Ordovician Cambrian
In N. America Pennsylvanian Carboniferous Mississippian
Periods Cenozoic Cretaceous Jurassic Mesozoic Triassic Paleozoic
Periods Quaternary Cenozoic Neogene Mesozoic Paleogene Paleozoic
Epochs present Quaternary 1.8 Ma Neogene 23.8 Ma Paleogene 65 Ma
Epochs Holocene Quaternary Pleistocene Neogene Pliocene Paleogene Miocene Oligocene Eocene Paleocene