PBDB Timescale

Obsolete Names for ICS Units

The interval definitions in this timescale are derived from the following sources:

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
K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. 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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view

There are 55 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 92 collections

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cretaceous Subepochs	Neogene Mammal Ages of China	Ordovician of Ibero-Bohemia				Permian of China	Devonian Subages	Permian of North America
Quaternary	Pleistocene	Late Pleistocene					Nihewanian									0.0117
		Chibanian														0.129
		Calabrian														0.774
		Gelasian														1.8
Neogene	Pliocene	Piacenzian	Tertiary †				Yushean									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
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														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		Longtanian †								Laoshanian				254.14
		Wuchiapingian		Longtanian †								Laibinian				257.7 *
	Guadalupian	Capitanian										Lengwuan		Capitanian		259.51
		Wordian										Kuhfengian		Wordian		264.28
		Roadian										Kuhfengian		Roadian		266.9
	Cisuralian	Kungurian										Luodianian		Leonardian	Cathedralian	273.01
		Kungurian													Hessian	281.9 *
		Artinskian														283.5
					Longlinian			285.4 *
								Wolfcampian	Lenoxian	286.1 *
		Sakmarian							Lenoxian	290.1
		Asselian			Zisongian				Nealian	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								Late Famennian	358.9
										Middle Famennian	365.3 *
										Early Famennian	368.5 *
		Frasnian					Late Frasnian			372.2
							Middle Frasnian			375.4 *
							Early Frasnian			379.3 *
	Middle Devonian	Givetian					Late Givetian			382.7
							Middle Givetian			383.7 *
							Early Givetian			385.9 *
		Eifelian					Late Eifelian			387.7
		Eifelian					Early Eifelian			390.3 *
	Early Devonian	Emsian					Late Emsian			393.3
		Emsian	Early Emsian				398.3 *
		Pragian	Pragian				407.6
		Lochkovian	Late Lochkovian				410.8
			Middle Lochkovian				412.8 *
			Early Lochkovian				415.6 *
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				Kosovian	443.8
		Katian				Kralodvorian	Bohdalec †			445.2
		Katian				Berounian				449.7 *
		Sandbian								453
										Zahorany †/Vinice	Letna †	456.2 *
							Liben †					458 *
	Middle Ordovician	Darriwilian										458.4
						Dobrotivian						458.5 *
						Oretanian						459.7 *
							Sarka †					461.7 *
		Dapingian					Klabava †					467.3
		Dapingian				Arenigian						468
	Early Ordovician	Floian				Arenigian						470
	Early Ordovician	Tremadocian				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
																509