Geologic Time Scale

File:GTS.pdfFile:ChronostratChart2020-01.pdf

The Geologic Time scale is divided into taxonomic-like segments, shown here:

* Eon
	+ Era
		- Period
			* Epoch
				+ Age

These segments are started and ended by certain geologic events, and help keep track of layers, geologic time-keeping, and fossil dating.

Mya = Million Years Ago

Geologic Time Scale :

* Phanerozoic Eon
	+ Cenezoic Era
		- Quaternary Period
			* Holocene Epoch
				+ Meghalayan Age
				+ Northgrippian Age
				+ Greenlandian Age
			* Pleistocene Epoch
				+ Late Pleistocene Age
				+ Chibanian Age
				+ Calabrian Age
				+ Gelasian Age
		- Neogene Period
			* Pliocene Epoch
				+ Piacenzian Age
				+ Zanclean Age
			* Miocene Epoch
				+ Messinian Age
				+ Tortonian Age
				+ Serravallian Age
				+ Langhian Age
				+ Burigalian Age
				+ Aquitanian Age
		- Paleocene Period
			* Oligocene Epoch
				+ Chattian Age
				+ Rupelian Age
			* Eocene Epoch
				+ Priabonian Age
				+ Bartonian Age
				+ Lutetian Age
				+ Ypresian Age
			* Paleocene Epoch
				+ Thanetian Age
				+ Selandian Age
				+ Danian Age
	+ Mesozoic Era
		- Cretaceous Period
			* Late Cretaceous Epoch
				+ Maastrichtian Age
				+ Campanian Age
				+ Santonian Age
				+ Coniacian Age
				+ Turonian Age
				+ Cenomanian Age
			* Early Cretaceous Epoch
				+ Albian Age
				+ Aptian Age
				+ Barrenian Age
				+ Hauterivian Age
				+ Valanginian Age
				+ Berriasian Age
		- Jurassic Period
			* Late Jurassic Epoch
				+ Tithonian Age
				+ Kimmeridgian Age
				+ Oxfordian Age
			* Middle Jurassic Epoch
				+ Callovian Age
				+ Bathonian Age
				+ Bajocian Age
				+ Aalenian Age
			* Early Jurassic Epoch
				+ Toarcian Age
				+ Pliensbachian Age
				+ Sinemurian Age
				+ Hettangian Age
		- Triassic Period
			* Late Triassic Epoch
				+ Rhaetian Age
				+ Norian Age
				+ Carnian Age
			* Middle Triassic Epoch
				+ Ladinian Age
				+ Anisian Age
			* Early Triassic Epoch
				+ Olenekian Age
				+ Induan Age
	+ Paleozoic Era
		- Permian Period
			* Lopingian Epoch
				+ Changhsingian Age
				+ Wuchiapingian Age
			* Guadalupin Epoch
				+ Capitanian Age
				+ Wordian Age
				+ Roadian Age
			* Cisuralian Epoch
				+ Kungurian Age
				+ Artinskian Age
				+ Sakmarian Age
				+ Asselian Age
		- Carboniferous Period
			* Late Pennsylvanian Epoch
				+ Gzhelian Age
				+ Kasimovian Age
			* Middle Pennsylvanian Epoch
				+ Moscovian Age
			* Early Pennsylvanian Epoch
				+ Bashkirian Age
			* Late Mississippian Epoch
				+ Serpukhovian Age
			* Middle Mississippian Epoch
				+ Visean Age
			* Early Mississippian Epoch
				+ Tournaisian Age
		- Devonian Period
			* Late Devonian Epoch
				+ Famennian Age
				+ Frasnian Age
			* Middle Devonian Epoch
				+ Givetian Age
				+ Eifelian Age
			* Early Devonian Epoch
				+ Emsian Age
				+ Pragian Age
				+ Lochkovian Age
		- Silurian Period
			* Pridoli Epoch
				+ Pridoli Age
			* Ludlow Epoch
				+ Ludfordian Age
				+ Gorstian Age
			* Wenlock Epoch
				+ Homerian Age
				+ Sheinwoodian Age
			* Llandovery Epoch
				+ Telychian Age
				+ Aeronian Age
				+ Rhuddanian Age
		- Ordovician Period
			* Late Ordovician Epoch
				+ Katian Age
				+ Sandbian Age
			* Middle Ordovician Epoch
				+ Darriwilian Age
				+ Dapingian Age
			* Early Ordovician Epoch
				+ Floian Age
				+ Tremadocian Age
		- Cambrian Period
			* Furongian Epoch
				+ Cambrian Age 10
				+ Jiangshanian Age
				+ Paibian Age
			* Cambrian Epoch 3
				+ Guzhangian Age
				+ Drumian Age
				+ Cambrian Age 5
			* Cambrian Epoch 2
				+ Cambrian Age 4
				+ Cambrian Age 3
			* Terreneuvian Epoch
				+ Cambrian Age 2
				+ Fortunian Age
* Proterozoic Eon
	+ Neoproterozoic Era
		- Ediacaran Period
		- Cryogenian Period
		- Tonian Period
	+ Mesoproterozoic Era
		- Stenian Period
		- Ectasian Period
		- Calymmian Period
	+ Paleoproterozoic Era
		- Statherian Period
		- Orosirian Period
		- Rhyacian Period
		- Siderian Period
* Archean Eon
	+ Neoarchean Era
	+ Mesoarchean Era
	+ Paleoarchean Era
	+ Eoarchean Era
* Hadean Eon

## References

1. ↑ Geologic Time Scale (GTS)
2. ↑ ChronostratChart