PBDB Interval

International Chronostratigraphic Timescale

The interval definitions in this timescale are derived from the following sources:

K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view

There are 59 timescales which overlap this one. show

Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

Interval names marked with † are no longer in current use.

This timescale is used in the definition of 126699 collections

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International Chronostratigraphic Timescale					Permian of the Pamirs	Carboniferous of North America	Obsolete Precambrian Ages		Permian of China	Cretaceous-Cenozoic of New Zealand		Carboniferous of China	Obsolete Names for ICS Units
Phanerozoic	Cenozoic	Quaternary	Holocene	Meghalayan						Wanganui	Haweran			0
				Northgrippian										0.0042
				Greenlandian										0.0082
			Pleistocene	Late Pleistocene										0.0117
				Chibanian										0.129
				Chibanian							Castlecliffian			0.34
				Calabrian							Castlecliffian			0.774
				Calabrian							Nukumaruan			1.63
				Gelasian							Nukumaruan			1.8
				Gelasian							Mangapanian			2.4
		Neogene	Pliocene	Piacenzian							Mangapanian		Tertiary †	2.58
				Piacenzian							Waipipian			3
				Zanclean							Waipipian			3.6
				Zanclean							Opoitian			3.7
			Miocene	Messinian						Taranaki	Kapitean			5.333
				Messinian							Tongaporutuan			7.2
				Tortonian							Tongaporutuan			7.246
				Tortonian						Southland	Waiauan			11.04
				Serravallian							Waiauan			11.63
				Serravallian							Lillburnian			13.05
				Langhian							Lillburnian			13.82
											Clifdenian			15.1
										Pareora	Altonian			15.9
				Burdigalian							Altonian			15.98
				Burdigalian							Otaian			18.7
				Aquitanian							Otaian			20.44
				Aquitanian						Landon	Waitakian			21.7
		Paleogene	Oligocene	Chattian							Waitakian			23.03
											Duntroonian			25.2
											Whaingaroan			27.3
				Rupelian										27.82
			Eocene	Priabonian										33.9
										Arnold	Runangan			34.6
											Kaiatan			36.7
				Bartonian							Kaiatan			37.71
				Bartonian							Bortonian			39.1
				Lutetian							Bortonian			41.2
										Dannevirke	Porangan			42.6
											Heretaungan			45.7
				Ypresian							Heretaungan			47.8
											Mangaorapan			48.9
											Waipawan			52
			Paleocene	Thanetian							Teurian			56
				Selandian										59.2
				Danian										61.6
	Mesozoic	Cretaceous	Late Cretaceous	Maastrichtian						Mata	Haumurian			66
				Campanian							Haumurian			72.1
				Santonian							Piripauan			83.6
				Santonian						Raukumara	Teratan			86.1
				Coniacian										86.3
				Turonian										89.8
											Mangaotanean			90.5
											Arowhanan			93.7
				Cenomanian							Arowhanan			93.9
										Clarence	Ngaterian			95.2
											Motuan			99.5
			Early Cretaceous	Albian							Motuan			100.5
											Urutawan			103.3
										Taitai	Korangan			108.4
				Aptian							Korangan			113
				Aptian										117.5
				Barremian										121.4
				Hauterivian										125.77
				Valanginian										132.6
Berriasian				139.8
Jurassic		Late Jurassic	Tithonian		145
			Kimmeridgian		149.2
			Oxfordian		154.8
		Middle Jurassic	Callovian		161.5
			Bathonian		165.3
			Bajocian		168.2
			Aalenian		170.9
		Early Jurassic	Toarcian		174.7
			Pliensbachian		184.2
			Sinemurian		192.9
			Hettangian		199.5
Triassic		Late Triassic	Rhaetian		201.4
			Norian		208.5
			Carnian		227
		Middle Triassic	Ladinian		237
		Middle Triassic	Anisian		242
		Early Triassic	Olenekian		247.2
		Early Triassic	Induan		251.2
Paleozoic	Permian	Lopingian	Changhsingian		Dorashamian	Meishanian	251.902
			Changhsingian		Dorashamian	Baoqingian	253.4 *
			Wuchiapingian		Dzhulfian	Laoshanian	Longtanian †	254.14
			Wuchiapingian		Dzhulfian	Laibinian	Longtanian †	257.7 *
		Guadalupian	Capitanian		Midian	Lengwuan		259.51
			Wordian		Midian	Kuhfengian		264.28
			Wordian		Murgabian			266.2 *
			Roadian		Murgabian			266.9
		Cisuralian	Kungurian		Kubergandian	Luodianian		273.01
			Kungurian		Bolorian			279.8
			Artinskian					283.5
						Longlinian		285.4 *
					Yakhtashian			286
			Sakmarian		Sakmarian			290.1
			Asselian		Asselian	Bursumian †		Zisongian	293.52
	Carboniferous	Pennsylvanian	Gzhelian			Virgilian			298.9
									Xiaodushanian	300 *
										300.1
			Kasimovian			Missourian				303.7
						Missourian			Dalaun	305.8 *
						Desmoinesian				305.9 *
			Moscovian			Desmoinesian				307
			Moscovian			Atokan				312.7 *
			Bashkirian			Atokan				315.2
						Morrowan				318.4 *
									Huashibanian	318.5 *
									Lousuan	321.2 *
		Mississippian	Serpukhovian			Chesterian			Dewunian	323.2
			Serpukhovian						Shangsian	330.8 *
			Visean						Shangsian	330.9
									Jiusian	335 *
						Meramecian				335.8 *
						Osagean				343.1 *
			Tournaisian			Osagean			Tangbagouan	346.7
			Tournaisian			Kinderhookian			Tangbagouan	351.9 *
	Devonian	Late Devonian	Famennian							358.9
		Late Devonian	Frasnian							372.2
		Middle Devonian	Givetian							382.7
		Middle Devonian	Eifelian							387.7
		Early Devonian	Emsian							393.3
			Pragian							407.6
			Lochkovian							410.8
	Silurian	Pridoli								419.2
		Ludlow	Ludfordian							423
		Ludlow	Gorstian							425.6
		Wenlock	Homerian							427.4
		Wenlock	Sheinwoodian	430.5
		Llandovery	Telychian	433.4
			Aeronian	438.5
			Rhuddanian	440.8
	Ordovician	Late Ordovician	Hirnantian	443.8
			Katian	445.2
			Sandbian	453
		Middle Ordovician	Darriwilian	458.4
		Middle Ordovician	Dapingian	467.3
		Early Ordovician	Floian	470
		Early Ordovician	Tremadocian	477.7
	Cambrian	Furongian	Stage 10	485.4
			Jiangshanian	489.5
			Paibian	494
		Miaolingian	Guzhangian	Series 3 †						497
			Drumian							500.5
			Wuliuan				Stage 5 †			504.5
		Series 2	Stage 4							509
Stage 3		Series 2	514
Terreneuvian		Stage 2	521
Terreneuvian		Fortunian	529
Proterozoic	Neoproterozoic	Ediacaran									Vendian †	Poundian †	538.8
Proterozoic	Neoproterozoic	Ediacaran									Vendian †	Wonokan †	571.7 *
														635