All Geological Eons, Eras, Periods and Epochs

How many geological Eons, Eras, Periods and Epochs in Earth's history can you name?

The shaded cell is a proposed but unofficial epoch

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Last updated: October 6, 2022

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First submitted	October 6, 2022
Times taken	253
Average score	33.3%
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Eon	Era	Period	Epoch	Dates
Hadean				4600 - 4000 MYA
Archean	Eoarchean			4000 - 3600 MYA
	Paleoarchean			3600 - 3200 MYA
	Mesoarchean			3200 - 2800 MYA
	Neoarchean			2800 - 2500 MYA
Proterozoic	Paleoproterozoic	Siderian		2500 - 2300 MYA
		Rhyacian		2300 - 2050 MYA
		Orosirian		2050 - 1800 MYA
		Statherian		1800 - 1600 MYA
	Mesoproterozoic	Calymmian		1600 - 1400 MYA
		Ectasian		1400 - 1200 MYA
		Stenian		1200 - 1000 MYA
	Neoproterozoic	Tonian		1000 - 720 MYA
		Cryogenian		720 - 635 MYA
		Ediacaran		635 - 539 MYA
Phanerozoic	Paleozoic	Cambrian	Terreneuvian	539 - 521 MYA
			Series 2	521 - 509 MYA
			Miaolingian	509 - 497 MYA
			Furongian	497 - 485 MYA
		Ordovician	Lower/Early	485 - 470 MYA
			Middle	470 - 458 MYA
			Upper/Late	458 - 444 MYA
		Silurian	Llandovery	444 - 433 MYA
			Wenlock	433 - 427 MYA
			Ludlow	427 - 423 MYA
			Pridoli	423 - 419 MYA
		Devonian	Lower/Early	419 - 393 MYA
			Middle	393 - 383 MYA
			Upper/Late	383 - 359 MYA
		Carboniferous	Mississippian	359 - 323 MYA
		Carboniferous	Pennsylvanian	323 - 299 MYA
		Permian	Cisuralian	299 - 273 MYA
			Guadalupian	273 - 260 MYA
			Lopingian	260 - 252 MYA
	Mesozoic	Triassic	Lower/Early	252 - 247 MYA
			Middle	247 - 237 MYA
			Upper/Late	237 - 201 MYA
		Jurassic	Lower/Early	201 - 174 MYA
			Middle	174 - 164 MYA
			Upper/Late	164 - 145 MYA
		Cretaceous	Lower/Early	145 - 101 MYA
		Cretaceous	Upper/Late	101 - 66 MYA
	Cenozoic	Paleogene	Paleocene	66 - 56 MYA
			Eocene	56 - 34 MYA
			Oligocene	34 - 23 MYA
		Neogene	Miocene	23 - 5.3 MYA
		Neogene	Pliocene	5.3 - 2.6 MYA
		Quaternary	Pleistocene	2.6 MYA - 12K YA
			Holocene	12K - 0 YA
			Anthropocene	~75 - 0 YA