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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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

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.

This timescale is used in the definition of 126831 collections

Show more time

Show linear time

International Chronostratigraphic Timescale			Cambrian of Kazakhstan	Devonian of Czechoslovakia	Silurian of North America			Permian-Jurassic of New Zealand		Silurian Ages of Europe	Permian of the Salt Range	European Faunal Units
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		Kathwai		251.5 *
Permian	Lopingian	Changhsingian									Kathwai		251.902
													252.4 *
			Chhidru	252.9 *
				Waiitian	253.2
		Wuchiapingian		Waiitian	254.14
				Puruhauan	254.2
			Kalabagh		255 *
			Wargal		256 *
	Guadalupian	Capitanian		Aparima	Flettian	259.51
		Wordian				264.28
						265.3 *
					Barettian	266
			Amb			266.1 *
		Roadian	Amb			266.9
		Roadian				270.7 *
	Cisuralian	Kungurian				273.01
		Kungurian			Mangapirian	276
		Artinskian			Mangapirian	283.5
					Telfordian	285
						288.5
		Sakmarian				290.1
		Asselian				293.52
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				358.9
	Late Devonian	Frasnian				372.2
	Middle Devonian	Givetian				Srbsko	382.7
	Middle Devonian	Eifelian				Chotec	387.7
	Early Devonian	Emsian				Daleje/Zlichovian	393.3
		Pragian				Pragian	407.6
		Lochkovian				Lochkovian	410.8
Silurian	Pridoli						Cayugan	419.2
	Pridoli						Niagaran	422.5 *
	Ludlow	Ludfordian						423
	Ludlow	Gorstian						425.6
	Wenlock	Homerian						Lockportian	Gleedonian	427.4
		Homerian						Lockportian	Whitwellian	429.7 *
		Sheinwoodian								430.5
	Llandovery	Telychian						Ontarian		433.4
		Aeronian								438.5
										Alexandrian	438.7 *
							Medinan	Clinton			440.1 *
											440.7 *
		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
	Early Ordovician	Tremadocian									Ungurian	477.7
Cambrian	Furongian	Stage 10									Batyrbaian	485.4
		Jiangshanian									Batyrbaian	489.5
											Aksaian	490.7 *
											Sakian	492.2 *
		Paibian									Sakian	494
	Miaolingian	Guzhangian									Ayusokkanian	497
		Guzhangian										499.5
		Drumian									Zhanaarykian	500.5
		Drumian									Tuesaian	503
		Wuliuan									Tuesaian	504.5
		Wuliuan										505.3
	Series 2	Stage 4										509
											Toyonian	510 *
											Botomian	512.5 *
		Stage 3									Botomian	514
		Stage 3									Atdabanian	515.6 *
	Terreneuvian	Stage 2									Tommotian	521
													525.5