Geology starts in fifty minutes. We have a quiz about the Geologic time scale. Let's see, without looking:
Precambrian - Archean and Proterozoic
Phanerozoic -
Cambrian, Ordovician, Silurian, Devonian, Carboniferous (Mississippian and Pennsylvanian,) Permian, Triassic, Jurassic, Cretaceous, Paleogene, Neogene, Quaternary -
Paleocene, Eocene,
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