PBDB Timescale

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
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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 126778 collections

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International Chronostratigraphic Timescale					Permian of the Russian Platform		Cambrian of Australia	Cambrian of Siberia			Precambrian of Russia	Silurian Ages of Europe	Devonian of Germany
Phanerozoic	Cenozoic	Quaternary	Holocene	Meghalayan										0
				Northgrippian										0.0042
				Greenlandian										0.0082
			Pleistocene	Late Pleistocene										0.0117
				Chibanian										0.129
				Calabrian										0.774
				Gelasian										1.8
		Neogene	Pliocene	Piacenzian										2.58
			Pliocene	Zanclean										3.6
			Miocene	Messinian										5.333
				Tortonian										7.246
				Serravallian										11.63
				Langhian										13.82
				Burdigalian										15.98
				Aquitanian										20.44
		Paleogene	Oligocene	Chattian										23.03
			Oligocene	Rupelian										27.82
			Eocene	Priabonian										33.9
				Bartonian										37.71
				Lutetian										41.2
				Ypresian										47.8
			Paleocene	Thanetian										56
				Selandian										59.2
				Danian										61.6
	Mesozoic	Cretaceous	Late Cretaceous	Maastrichtian										66
				Campanian										72.1
				Santonian										83.6
				Coniacian										86.3
				Turonian										89.8
				Cenomanian										93.9
			Early Cretaceous	Albian										100.5
				Aptian										113
				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										251.902
				Wuchiapingian										254.14
				Wuchiapingian	Tatarian	Vyatkian								256.8 *
			Guadalupian	Capitanian		Severodvinian								259.51
				Wordian		Urzhumian								264.28
				Roadian	Kazanian	Povolzhian								266.9
				Roadian	Kazanian	Sokian								270.7 *
			Cisuralian	Kungurian	Kungurian	Irenian/Ufimian								273.01
						Filipovian								276.5 *
						Saraninian								280.1 *
Artinskian				Artinskian	Sarginian	283.5
					Irginian	285.9 *
					Burtsevian	287.8 *
Sakmarian				Sakmarian	Sterlitamakian	290.1
Sakmarian				Sakmarian	Tastubian	291.7 *
Asselian				Asselian	Shikhanian	293.52
					Uskalykian	294.8
					Surenian	297.5
Carboniferous		Pennsylvanian	Gzhelian			298.9
			Kasimovian			303.7
			Moscovian			307
			Bashkirian			315.2
		Mississippian	Serpukhovian			323.2
			Visean			330.9
			Tournaisian			346.7
Devonian		Late Devonian	Famennian			Wocklum/Dasberg/Hemberg/Nehden	358.9
		Late Devonian	Frasnian			Adorf	372.2
		Middle Devonian	Givetian			Givetian	382.7
		Middle Devonian	Eifelian			Eifelian	387.7
		Early Devonian	Emsian			Emsian	393.3
			Pragian			Siegen	407.6
			Lochkovian			Gedinnine	410.8
Silurian		Pridoli					419.2
		Ludlow	Ludfordian				423
		Ludlow	Gorstian				425.6
		Wenlock	Homerian				Gleedonian	427.4
			Homerian				Whitwellian	429.7 *
			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
			Tremadocian					477.7
			Tremadocian					Mansian †	483.55 *
Cambrian		Furongian	Stage 10					Datsonian	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
			Stage 10					Payntonian				486.8 *
			Jiangshanian					Iverian				489.5
									Aksaian			490.7 *
									Sakian			492.2 *
			Paibian					Idamean				494
			Paibian					Idamean			Ensyan †/Maduan/Nganasanian	494.7 *
		Miaolingian	Guzhangian					Mindyallan	Ayusokkanian			497
								Boomerangian	Ayusokkanian			499
								Boomerangian	Mayan/Menevian			499.5
			Drumian					Undillan				500.5
			Drumian					Floran				503
			Wuliuan					Templetonian	Amgan/Solvan			504.5
			Wuliuan					Ordian				507.8 *
		Series 2	Stage 4									509
	Toyonian								Lenian †	510 *
	Toyonian									510.8 *
	Botomian									512.5 *
	Botomian		Stage 3							514
	Atdabanian		Stage 3							515.6 *
	Terreneuvian	Stage 2	Tommotian							521
		Stage 2	Nemakit-Daldynian							525.5
		Fortunian	Nemakit-Daldynian						Manykaian †	529
Proterozoic	Neoproterozoic	Ediacaran											Vendian	538.8
		Cryogenian												635
		Tonian												720
		Tonian											Karatau	800
	Mesoproterozoic	Stenian											Karatau	1000
		Stenian											Yurmatian	1100
		Ectasian											Yurmatian	1200
		Ectasian											Burzyan	1375
		Calymmian												1400
	Paleoproterozoic	Statherian												1600
		Orosirian		1800
		Rhyacian		2050
		Siderian		2300
Archean	Neoarchean			2500
	Mesoarchean			2800
	Paleoarchean			3200
	Eoarchean			3600
Hadean				4000
														4600