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
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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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 126700 collections

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International Chronostratigraphic Timescale			Ordovician of Britain					Central Paratethys Stages	Permian of China	Ordovician of the Baltic				Ordovician of Ibero-Bohemia
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						Pannonian									7.246
		Serravallian						Sarmatian									11.63
		Serravallian						Badenian									12.8 *
		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
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
Permian	Lopingian	Changhsingian							Meishanian								251.902
		Changhsingian							Baoqingian								253.4 *
		Wuchiapingian							Laoshanian								254.14
		Wuchiapingian							Laibinian								257.7 *
	Guadalupian	Capitanian							Lengwuan								259.51
		Wordian							Kuhfengian								264.28
		Roadian							Kuhfengian								266.9
	Cisuralian	Kungurian							Luodianian								273.01
		Artinskian							Luodianian								283.5
		Artinskian	Longlinian	285.4 *
		Sakmarian	Longlinian	290.1
		Asselian	Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian	Zisongian	298.9
		Gzhelian		300.1
		Kasimovian		303.7
		Moscovian		307
		Bashkirian		315.2
	Mississippian	Serpukhovian		323.2
		Visean		330.9
		Tournaisian		346.7
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		Ashgill	Hirnantian	Harju	Porkuni	Kosovian	443.8
		Katian			Rawtheyan		Pirgu	Kralodvorian	Bohdalec †	445.2
					Cautleyan					448.9 *
					Pusgillian					449.3 *
				Caradoc	Streffordian		Onnian †			Vormsi	449.6 *
								Berounian		Vormsi	449.7 *
										Nabala	Johvi †	450 *
						Viru				Rakvere		450.6 *
					Cheneyan					Rakvere		451.5 *
					Cheneyan					Oandu		452 *
					Burrellian					Oandu		452.7 *
		Sandbian								Keila	Idavere †	453
							Actonian †			Keila		453.2 *
							Actonian †			Haljala		453.9
							Marshbrookian †					Woolstonian †	454.2 *
							Longvillian †						455.2 *
													Zahorany †/Vinice	Letna †	456.2 *
										Kukruse					456.4 *
					Aurelucian										456.8 *
							Soudleyan †/Harnagian/Costonian								457.4 *
										Uhaku	Aluoja †				457.5 *
									Liben †						458 *
	Middle Ordovician	Darriwilian		Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn										458.4
								Dobrotivian							458.5 *
								Dobrotivian		Lasnamagi					458.9 *
								Oretanian		Lasnamagi					459.7 *
										Aseri					460.4 *
					Abereiddian/Early Llanvirn										461.3 *
									Sarka †						461.7 *
						Oeland				Kunda					462.9 *
										Kunda	Valaste †/Hunderum				464.3 *
										Volkhov					Langevoja †/Vaana/Saka	467.1 *
		Dapingian							Klabava †							467.3
								Arenigian								468
				Arenig	Fennian											468.4 *
										Billingen						469.3 *
	Early Ordovician	Floian														470
											Latorp †					470.1 *
					Whitlandian											471.1 *
					Whitlandian					Hunneberg						473.7 *
					Moridunian											474.3 *
		Tremadocian		Tremadoc	Migneintian			Tremadocian								477.7
			Cressagian		480.8 *
					Varangu					481.3 *
					Pakerort					482.2 *
										485 *
Cambrian	Furongian	Stage 10									485.4
											486.3 *
											486.5
		Jiangshanian									489.5
		Paibian									494
	Miaolingian	Guzhangian									497
		Drumian									500.5
		Wuliuan									504.5
	Series 2	Stage 4									509
	Series 2	Stage 3									514
	Terreneuvian	Stage 2									521
	Terreneuvian	Fortunian									529
																	538.8