ERTH 101 - Geologic Time Scale

Earth 101 Geological Time Chart

Please note that each of these terms are proper nouns (capitalized).

Some things to look for (commonly missed):

it is Pleistocene ("ei" does not conform to a common spelling rule); and
it is Ordovician (not Ordivician which is what the word often sounds like).

Click here for a printable version.

YOUNGEST

Eon	Era	Period		Epoch
Phanerozoic	Cenozoic	Quaternary		Holocene
				Pleistocene
		Tertiary	Neogene	Pliocene
				Miocene
			Paleogene	Oligocene
				Eocene
				Paleocene
	Mesozoic	Cretaceous
		Jurassic
		Triassic
	Paleozoic	Permian
		Pennsylvanian	Carboniferous
		Mississippian
		Devonian
		Silurian
		Ordovician
		Cambrian
Proterozoic	Precambrian
Archean
Hadean

OLDEST

Last Updated on 10/1/07
By David B. Johnson
Email: