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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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 127017 collections

Show more time

Show linear time

International Chronostratigraphic Timescale					Cambrian of Australia	Permian Subages of Germany	Permian-Jurassic of New Zealand		Obsolete Carboniferous Ages of China	Permian of China	Ordovician of Ibero-Bohemia				European Faunal Units
Phanerozoic	Cenozoic	Neogene	Pliocene	Piacenzian											Villanyian	2.58
				Piacenzian											Ruscinian	3.1 *
				Zanclean											Ruscinian	3.6
			Miocene	Messinian											Turolian	5.333
				Tortonian											Turolian	7.246
				Tortonian											Vallesian	8.7
				Serravallian											Astaracian	11.63
				Langhian											Astaracian	13.82
				Burdigalian											Orleanian	15.98
				Burdigalian											Agenian	20
				Aquitanian											Agenian	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			Oteke	Puaroan								145
				Kimmeridgian			Oteke	Puaroan								149.2
							Kawhia	Ohauan								150
								Heterian								154.5
				Oxfordian												154.8
			Middle Jurassic	Callovian												161.5
				Callovian				Temaikan								164.3
				Bathonian												165.3
				Bajocian												168.2
				Aalenian												170.9
			Early Jurassic	Toarcian												174.7
				Toarcian			Herangi	Ururoan								176
				Pliensbachian				Ururoan								184.2
				Pliensbachian				Aratauran								188.9
				Sinemurian												192.9
				Hettangian												199.5
		Triassic	Late Triassic	Rhaetian			Balfour	Otapirian								201.4
				Norian				Warepan								208.5
								Otamitan								217
								Oretian								221
				Carnian				Oretian								227
				Carnian			Gore	Kaihikuan								227.5
			Middle Triassic	Ladinian				Kaihikuan								237
				Ladinian				Etalian								238
				Anisian				Etalian								242
				Anisian				Malakovian								246
			Early Triassic	Olenekian				Malakovian								247.2
				Olenekian				Nelsonian								249
				Induan				Nelsonian								251.2
				Induan			DUrville	Makarewan								251.5
	Paleozoic	Permian	Lopingian	Changhsingian		Buntsandstein		Makarewan		Meishanian						251.902
								Waiitian		Meishanian						253.2
Baoqingian					253.4 *
Wuchiapingian				Laoshanian	254.14
				Laoshanian	Puruhauan			254.2
				Laibinian	Puruhauan			257.7 *
Guadalupian			Capitanian	Ohre/Aller	Aparima	Flettian	Lengwuan	259.51
			Wordian	Leine		Flettian	Kuhfengian	264.28
			Wordian	Leine		Barettian		266
			Roadian					266.9
Cisuralian			Kungurian				Luodianian	273.01
			Kungurian			Mangapirian		276
			Artinskian			Mangapirian		283.5
						Telfordian		285
						Telfordian	Longlinian	285.4 *
								288.5
			Sakmarian					290.1
			Asselian				Zisongian	293.52
			Asselian					Kuzel	297.7
Carboniferous		Pennsylvanian	Gzhelian						Mapingian †	298.9
										300.1
								Stephanian		Stephanian C	300.3 *
										Stephanian B	300.9 *
										Stephanian A	301.4 *
			Kasimovian							Stephanian A	303.7
										Cantabrian	305 *
											305.9
			Moscovian								307
								Westphalian		Westphalian D	307.4 *
										Westphalian C	309.8
										Westphalian B	314.6
			Bashkirian							Westphalian B	315.2
										Westphalian A	317 *
								Namurian		Yeadonian	318.8 *
										Marsdenian	320.2 *
										Kinderscoutian	321.5 *
										Alportian	322 *
										Chokierian	323.1 *
		Mississippian	Serpukhovian							Chokierian	323.2
										Arnsbergian	324 *
										Pendleian	327.4 *
			Visean					Warnantian		Brigantian †	330.9
								Livian		Asbian †	336.3 *
								Moliniacian		Holkerian †/Arundian/Chadian	340.2 *
			Tournaisian					Ivorian			346.7
			Tournaisian					Hastarian			353.7 *
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								Kosovian	443.8
			Katian								Kralodvorian	Bohdalec †	445.2
			Katian								Berounian		449.7 *
	Sandbian		453
			Zahorany †/Vinice										Letna †	456.2 *
			Liben †											458 *
	Middle Ordovician	Darriwilian												458.4
											Dobrotivian			458.5 *
											Oretanian			459.7 *
			Sarka †											461.7 *
		Dapingian	Klabava †											467.3
		Dapingian									Arenigian			468
	Early Ordovician	Floian		470							Arenigian
	Early Ordovician	Tremadocian	Tremadocian								477.7
Cambrian	Furongian	Stage 10	Datsonian											485.4
		Stage 10	Payntonian											486.8 *
		Jiangshanian	Iverian											489.5
		Paibian	Idamean											494
	Miaolingian	Guzhangian	Mindyallan		497
		Guzhangian	Boomerangian		499
		Drumian	Undillan		500.5
		Drumian	Floran		503
		Wuliuan	Templetonian		504.5
		Wuliuan	Ordian		507.8 *
	Series 2	Stage 4	Ordian		509
		Stage 4			510.8 *
		Stage 3			514
	Terreneuvian	Stage 2			521
	Terreneuvian	Fortunian			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
																1400