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. 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
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
A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 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			European Faunal Units	Ten Million Year Bins	Cambrian of China		Devonian of Eastern North America		Permian of Western Europe	North American Land Mammal Ages
Quaternary	Holocene	Meghalayan		Cenozoic 6						Saintaugustinean	0
		Meghalayan								Santarosean	0.0004
		Northgrippian									0.0042
		Greenlandian									0.0082
	Pleistocene	Late Pleistocene									0.0117
		Late Pleistocene								Rancholabrean	0.014
		Chibanian								Rancholabrean	0.129
		Chibanian								Irvingtonian	0.21
		Calabrian								Irvingtonian	0.774
		Calabrian								Blancan	1.4
		Gelasian									1.8
Neogene	Pliocene	Piacenzian	Villanyian								2.58
		Piacenzian	Ruscinian								3.1 *
		Zanclean									3.6
		Zanclean								Hemphillian	4.7
	Miocene	Messinian	Turolian								5.333
		Tortonian	Turolian								7.246
			Vallesian								8.7
			Vallesian							Clarendonian	9.4
		Serravallian	Astaracian	Cenozoic 5						Clarendonian	11.63
		Serravallian								Barstovian	12.5
		Langhian									13.82
		Burdigalian	Orleanian								15.98
										Hemingfordian	16.3
										Arikareean	18.5
			Agenian								20
		Aquitanian	Agenian								20.44
Paleogene	Oligocene	Chattian		Cenozoic 4							23.03
		Rupelian									27.82
										Whitneyan	29.5
										Orellan	31.8
	Eocene	Priabonian		Cenozoic 3						Chadronian	33.9
		Priabonian								Duchesnean	37
		Bartonian								Duchesnean	37.71
		Bartonian								Uintan	39.7
		Lutetian		Cenozoic 2						Uintan	41.2
		Lutetian								Bridgerian	46.2
		Ypresian								Bridgerian	47.8
										Wasatchian	50.5
										Clarkforkian	54.9
	Paleocene	Thanetian		Cenozoic 1						Clarkforkian	56
		Thanetian								Tiffanian	56.2
		Selandian								Tiffanian	59.2
		Selandian								Torrejonian	60.9
		Danian								Torrejonian	61.6
		Danian								Puercan	63.8
Cretaceous	Late Cretaceous	Maastrichtian		Cretaceous 8							66
		Campanian		Cretaceous 7							72.1
		Santonian		Cretaceous 6							83.6
		Coniacian									86.3
		Turonian									89.8
		Cenomanian		Cretaceous 5							93.9
	Early Cretaceous	Albian		Cretaceous 4							100.5
		Aptian		Cretaceous 3							113
		Barremian		Cretaceous 2							121.4
		Hauterivian		Cretaceous 2							125.77
		Valanginian		Cretaceous 1							132.6
		Berriasian		Cretaceous 1							139.8
Jurassic	Late Jurassic	Tithonian		Jurassic 6							145
		Kimmeridgian		Jurassic 5							149.2
		Oxfordian									154.8
	Middle Jurassic	Callovian									161.5
		Bathonian		Jurassic 4							165.3
		Bajocian		Jurassic 4							168.2
		Aalenian		Jurassic 3	170.9
	Early Jurassic	Toarcian		Jurassic 3	174.7
		Pliensbachian		Jurassic 2	184.2
		Sinemurian		Jurassic 1	192.9
		Hettangian		Jurassic 1	199.5
Triassic	Late Triassic	Rhaetian		Triassic 4	201.4
		Norian		Triassic 4	208.5
		Carnian		Triassic 3	227
	Middle Triassic	Ladinian		Triassic 2	237
	Middle Triassic	Anisian		Triassic 2	242
	Early Triassic	Olenekian		Triassic 1	247.2
	Early Triassic	Induan		Triassic 1	251.2
Permian	Lopingian	Changhsingian		Permian 4	251.902
	Lopingian	Wuchiapingian			Zechstein	254.14
	Guadalupian	Capitanian			Rotliegendes	259.51
		Wordian				264.28
		Roadian		Permian 3		266.9
	Cisuralian	Kungurian		Permian 2		273.01
		Artinskian			Autunian	283.5
		Sakmarian				290.1
		Asselian		Permian 1		293.52
Carboniferous	Pennsylvanian	Gzhelian		Carboniferous 5		298.9
		Kasimovian		Carboniferous 5		303.7
		Moscovian		Carboniferous 4		307
		Bashkirian		Carboniferous 4		315.2
	Mississippian	Serpukhovian		Carboniferous 3		323.2
		Visean		Carboniferous 2		330.9
		Tournaisian	Carboniferous 1	346.7
Devonian	Late Devonian	Famennian	Devonian 5	Conewangan/Conneautan/Canadaway		358.9
	Late Devonian	Frasnian	Devonian 4	West Fallsian/Sonyean		372.2
	Middle Devonian	Givetian	Devonian 3	Geneseean/Taghanican/Tioughniogan		Cazenovian	382.7
	Middle Devonian	Eifelian	Devonian 3	Southwoodian		Cazenovian	387.7
	Early Devonian	Emsian	Devonian 2	Sawkillian/Deer Parkian		Helderbergian	393.3
		Pragian	Devonian 1				407.6
		Lochkovian	Devonian 1				410.8
Silurian	Pridoli		Silurian 2				419.2
	Ludlow	Ludfordian					423
	Ludlow	Gorstian					425.6
	Wenlock	Homerian					427.4
	Wenlock	Sheinwoodian					430.5
	Llandovery	Telychian	Silurian 1				433.4
		Aeronian					438.5
		Rhuddanian					440.8
Ordovician	Late Ordovician	Hirnantian	Ordovician 5				443.8
		Katian	Ordovician 5				445.2
		Sandbian	Ordovician 4				453
	Middle Ordovician	Darriwilian	Ordovician 3				458.4
	Middle Ordovician	Dapingian	Ordovician 2				467.3
	Early Ordovician	Floian	Ordovician 2				470
	Early Ordovician	Tremadocian	Ordovician 1				477.7
Cambrian	Furongian	Stage 10	Cambrian 5				Niuchehean	Taoyuanian †	485.4
		Jiangshanian					Jiangshanian		489.5
		Paibian					Paibian		494
		Paibian					Paibian	Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian	Cambrian 4				Guzhangian	Wangcunian †	497
		Drumian	Cambrian 4				Drumian	Wangcunian †	500.5
		Wuliuan	Cambrian 3				Wuliuan/Taijangian		504.5
	Series 2	Stage 4	Cambrian 3				Duyunian		509
	Series 2	Stage 3	Cambrian 2				Nangaoian		514
	Terreneuvian	Stage 2	Cambrian 2				Meishucunian		521
		Fortunian	Cambrian 1				Meishucunian		529
		Fortunian	Cambrian 1				Jinnigian		530.7
											538.8