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
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. 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
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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
P. L. Gibbard, M. J. Head, and M. J. C. Walker. 2010. Formal ratification of the Quaternary System/Period and the Pleistocene Series/Epoch with a base at 2.58 Ma. Journal of Quaternary Science 25(2):96-102 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 126762 collections

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International Chronostratigraphic Timescale			Permian-Jurassic of New Zealand		European Faunal Units	Devonian of France	Ordovician of Britain				Permian of Western Europe	Carboniferous Subepochs	Cenozoic Subepochs of Southern Europe	Cambrian of North America
Quaternary	Pleistocene	Late Pleistocene											Tarantian		0.0117
		Chibanian											Ionian		0.129
		Calabrian													0.774
		Gelasian													1.8
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
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
Permian	Lopingian	Changhsingian		Makarewan		251.902
		Changhsingian		Waiitian		253.2
		Wuchiapingian		Waiitian		Zechstein	254.14
		Wuchiapingian		Puruhauan		Zechstein	254.2
	Guadalupian	Capitanian	Aparima	Flettian		Rotliegendes	259.51
		Wordian		Flettian			264.28
		Wordian		Barettian			266
		Roadian					266.9
	Cisuralian	Kungurian					273.01
		Kungurian		Mangapirian			276
		Artinskian		Mangapirian		Autunian	283.5
				Telfordian			285
							288.5
		Sakmarian			290.1
		Asselian			293.52
Carboniferous	Pennsylvanian	Gzhelian				Late Pennsylvanian	298.9
		Kasimovian				Late Pennsylvanian	303.7
		Moscovian				Middle Pennsylvanian	307
		Bashkirian				Early Pennsylvanian	315.2
	Mississippian	Serpukhovian				Late Mississippian	323.2
		Visean				Middle Mississippian	330.9
		Tournaisian				Early Mississippian	346.7
Devonian	Late Devonian	Famennian				Famennian		358.9
	Late Devonian	Frasnian				Frasnian		372.2
	Middle Devonian	Givetian				Givetian		382.7
	Middle Devonian	Eifelian				Couvinien		387.7
	Early Devonian	Emsian						393.3
		Pragian						407.6
		Pragian				Coblencien		408.2 *
		Lochkovian				Gedinnine		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						Ashgill	Hirnantian	443.8
		Katian							Rawtheyan	445.2
									Cautleyan	448.9 *
									Pusgillian	449.3 *
								Caradoc	Streffordian	Onnian †	449.6 *
									Cheneyan		451.5 *
									Burrellian		452.7 *
		Sandbian									453
										Actonian †	453.2 *
										Marshbrookian †	Woolstonian †	454.2 *
										Longvillian †		455.2 *
									Aurelucian	Longvillian †		456.8 *
									Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian						Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian							Abereiddian/Early Llanvirn			461.3 *
		Dapingian							Abereiddian/Early Llanvirn			467.3
		Dapingian						Arenig	Fennian			468.4 *
	Early Ordovician	Floian							Fennian			470
									Whitlandian			471.1 *
									Moridunian			474.3 *
		Tremadocian						Tremadoc	Migneintian			477.7
								Tremadoc	Cressagian			480.8 *
												485 *
Cambrian	Furongian	Stage 10										Franconian †/Dresbachian/Millardan	485.4
		Stage 10											Sunwaptan	487.5
		Jiangshanian											Sunwaptan	489.5
		Jiangshanian											Steptoean	493 *
		Paibian											Steptoean	494
	Miaolingian	Guzhangian										Marjumian	Albertian †	497
		Drumian										Marjumian		500.5
		Wuliuan										Topazan		504.5
		Wuliuan										Delamaran		506.5
	Series 2	Stage 4										Delamaran	Waucoban †	509
		Stage 4										Dyeran		511 *
		Stage 3										Dyeran		514
												Montezuman		514.8 *
												Begadean		519.9 *
	Terreneuvian	Stage 2												521
	Terreneuvian	Fortunian	529
															538.8