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
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
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
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

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 126831 collections

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International Chronostratigraphic Timescale					Silurian of the Baltic	Permian-Jurassic of New Zealand		European Faunal Zones	Permian Subages of Germany	Permian of the Pamirs	Obsolete Precambrian Ages		Neogene Mammal Ages of China	Obsolete Names for ICS Units
Phanerozoic	Cenozoic	Quaternary	Pleistocene	Late Pleistocene									Nihewanian		0.0117
				Chibanian											0.129
				Calabrian											0.774
				Gelasian				MN 17							1.8
		Neogene	Pliocene	Piacenzian				MN 16					Yushean	Tertiary †	2.58
				Piacenzian				MN 15							3.2
				Zanclean				MN 15							3.6
								MN 14							4.2
								MN 13					Baodean		4.9
			Miocene	Messinian				MN 13							5.333
				Tortonian				MN 12							7.246
								MN 11							7.75
								MN 10							8.7
								MN 9							9.7
								MN 7 + 8					Tunggurian		11.1
				Serravallian				MN 7 + 8							11.63
				Serravallian				MN 6							12.8 *
				Langhian				MN 5					Shanwangian		13.82
				Burdigalian				MN 4					Shanwangian		15.98
								MN 3					Xiejiaan		16.9
								MN 2							20
				Aquitanian				MN 2							20.44
				Aquitanian				MN 1							22.4
		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		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				227			Oretian
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
Paleozoic	Permian	Lopingian	Changhsingian		Makarewan	Buntsandstein	Dorashamian		251.902
			Changhsingian		Waiitian		Dorashamian		253.2
			Wuchiapingian		Waiitian		Dzhulfian		Longtanian †	254.14
			Wuchiapingian		Puruhauan		Dzhulfian		Longtanian †	254.2
		Guadalupian	Capitanian	Aparima	Flettian	Ohre/Aller	Midian			259.51
			Wordian		Flettian	Leine				264.28
					Barettian					266
							Murgabian			266.2 *
			Roadian				Murgabian			266.9
		Cisuralian	Kungurian				Kubergandian			273.01
					Mangapirian		Kubergandian			276
							Bolorian			279.8
			Artinskian							283.5
					Telfordian			285
					Telfordian		Yakhtashian	286
							Yakhtashian	288.5
			Sakmarian				Sakmarian	290.1
			Asselian				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					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							485.4
			Jiangshanian							489.5
			Paibian							494
		Miaolingian	Guzhangian							Series 3 †	497
			Drumian								500.5
			Wuliuan						Stage 5 †		504.5
		Series 2	Stage 4								509
		Series 2	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