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12 Cards in this Set

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Geochronologic Units

Eon


Era


Period


Epoch


Age

Longest to Shortest

Geostratigraphic Units

Eonothem


Erathem


System


Series


Stage

Geochronologic/GeoStratigraphic Match

Eon/Eonothem


Era/Erathem


Period/System


Epoch/Series


Age/Stage

Precambrian Eras

Hadean - ~4600ma


Archaean - 4000ma


Proterozoic - 2500ma

Proterozoic Periods (final 2)

Cryogenian - ~720ma


Ediacaran - ~635ma

Phanerozoic Eras

Paleozoic - ~541.0 +/- 1.0ma


Mesozoic - ~252ma


Cenozoic - ~66ma

“Visible Life”

Paleozoic Periods

Cambrian


Ordovician


Silurian


Devonian


Carboniferous


Mississippian


Pennsylvanian


Permian

Mesozoic Periods (~252ma)

Triassic


Jurassic


Cretaceous

Cenozoic Periods (~66ma)

Paleogene


Neogene


Quaternary

Paleogene Epochs

Paleocene


Eocene


Oligocene

Neogene Epochs

Miocene


Pliocene

Quaternary Epochs

Pleistocene


Holocene (Recent)