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
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
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

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 126606 collections

Show more time

Show linear time

International Chronostratigraphic Timescale			Permian of China	Permian-Jurassic of New Zealand		Cambrian Epochs	Cretaceous Subepochs	Carboniferous Subepochs	Obsolete Names for ICS Units
Neogene	Pliocene	Piacenzian							Tertiary †		2.58
	Pliocene	Zanclean									3.6
	Miocene	Messinian									5.333
		Tortonian									7.246
		Serravallian									11.63
		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					Senonian				66
		Campanian									72.1
		Santonian									83.6
		Coniacian									86.3
		Turonian									89.8
		Cenomanian									93.9
	Early Cretaceous	Albian					Gallic				100.5
		Aptian									113
		Barremian									121.4
		Hauterivian					Neocomian				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	Meishanian		Makarewan						251.902
			Meishanian		Waiitian						253.2
			Baoqingian								253.4 *
		Wuchiapingian	Laoshanian							Longtanian †	254.14
			Laoshanian		Puruhauan						254.2
			Laibinian		Puruhauan	257.7 *
	Guadalupian	Capitanian	Lengwuan	Aparima	Flettian			259.51
		Wordian	Kuhfengian		Flettian			264.28
		Wordian			Barettian			266
		Roadian						266.9
	Cisuralian	Kungurian	Luodianian					273.01
		Kungurian			Mangapirian			276
		Artinskian			Mangapirian			283.5
					Telfordian			285
			Longlinian		Telfordian			285.4 *
								288.5
		Sakmarian						290.1
		Asselian	Zisongian					293.52
Carboniferous	Pennsylvanian	Gzhelian	Zisongian					Late Pennsylvanian		298.9
		Gzhelian								300.1
		Kasimovian								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							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					443.8
		Katian					445.2
		Sandbian					453
	Middle Ordovician	Darriwilian					458.4
	Middle Ordovician	Dapingian					467.3
	Early Ordovician	Floian					470
	Early Ordovician	Tremadocian					477.7
Cambrian	Furongian	Stage 10					Late Cambrian		485.4
		Jiangshanian							489.5
		Paibian							494
	Miaolingian	Guzhangian					Middle Cambrian		Series 3 †	497
		Drumian								500.5
		Wuliuan				Stage 5 †				504.5
	Series 2	Stage 4				Early Cambrian				509
	Series 2	Stage 3								514
	Terreneuvian	Stage 2								521
	Terreneuvian	Fortunian								529
											538.8