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
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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 126762 collections

Show more time

Show linear time

International Chronostratigraphic Timescale					Cambrian of Australia	Neogene Mammal Ages of China	Obsolete Carboniferous Ages of China	Permian of the Pamirs	Obsolete Precambrian Ages		Obsolete Names for ICS Units
Phanerozoic	Cenozoic	Quaternary	Pleistocene	Late Pleistocene		Nihewanian								0.0117
				Chibanian										0.129
				Calabrian										0.774
				Gelasian										1.8
		Neogene	Pliocene	Piacenzian		Yushean					Tertiary †			2.58
				Zanclean		Yushean								3.6
				Zanclean		Baodean								4.9
			Miocene	Messinian										5.333
				Tortonian										7.246
				Tortonian		Tunggurian								11.1
				Serravallian		Tunggurian								11.63
				Langhian		Shanwangian								13.82
				Burdigalian		Shanwangian								15.98
				Burdigalian		Xiejiaan								16.9
				Aquitanian		Xiejiaan								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
	Mesozoic	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
	Paleozoic	Permian	Lopingian	Changhsingian				Dorashamian						251.902
			Lopingian	Wuchiapingian				Dzhulfian				Longtanian †		254.14
			Guadalupian	Capitanian				Midian						259.51
				Wordian				Midian						264.28
				Wordian				Murgabian						266.2 *
				Roadian				Murgabian						266.9
			Cisuralian	Kungurian				Kubergandian						273.01
				Kungurian				Bolorian						279.8
				Artinskian				Bolorian						283.5
				Artinskian				Yakhtashian						286
Sakmarian				Sakmarian	290.1
Asselian				Asselian	293.52
Carboniferous		Pennsylvanian	Gzhelian	Mapingian †			298.9
			Kasimovian	Mapingian †			303.7
			Kasimovian				305.9
			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				Ohesaare	419.2
		Pridoli				Kaugetuma	421.7 *
		Ludlow	Ludfordian			Kuressaare	423
			Ludfordian			Paadla	423.4 *
			Gorstian			Paadla	425.6
		Wenlock	Homerian			Rootsikula	427.4
			Homerian			Jaagarahu	429.2 *
			Sheinwoodian			Jaagarahu	430.5
			Sheinwoodian			Jaani	431.8 *
		Llandovery	Telychian			Jaani	433.4
			Telychian			Adavere	434 *
			Aeronian			Adavere	438.5
			Aeronian			Raikkula	439.4 *
			Rhuddanian			Raikkula	440.8
			Rhuddanian			Juuru	441.4 *
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				Datsonian	485.4
			Stage 10				Payntonian	486.8 *
			Jiangshanian				Iverian	489.5
			Paibian				Idamean	494
		Miaolingian	Guzhangian				Mindyallan	Series 3 †	497
			Guzhangian				Boomerangian		499
			Drumian				Undillan		500.5
			Drumian				Floran		503
			Wuliuan				Templetonian		Stage 5 †	504.5
			Wuliuan				Ordian		Stage 5 †	507.8 *
		Series 2	Stage 4				Ordian			509
			Stage 4							510.8 *
			Stage 3							514
		Terreneuvian	Stage 2							521
		Terreneuvian	Fortunian							529
Proterozoic	Neoproterozoic	Ediacaran									Vendian †	Poundian †	538.8
Proterozoic	Neoproterozoic	Ediacaran									Vendian †	Wonokan †	571.7 *
														635