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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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			Ordovician of China			Cambrian of Kazakhstan	Cambrian Epochs	Devonian of Czechoslovakia	Permian of Western Europe	Central Paratethys Stages	Ordovician of the Baltic
Neogene	Pliocene	Piacenzian	Tertiary †														2.58
	Pliocene	Zanclean															3.6
	Miocene	Messinian															5.333
		Tortonian											Pannonian				7.246
		Serravallian											Sarmatian				11.63
		Serravallian											Badenian				12.8 *
		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															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
Permian	Lopingian	Changhsingian															251.902
	Lopingian	Wuchiapingian		Longtanian †								Zechstein					254.14
	Guadalupian	Capitanian										Rotliegendes					259.51
		Wordian															264.28
		Roadian															266.9
	Cisuralian	Kungurian															273.01
		Artinskian										Autunian					283.5
		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					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				Hirnantian	Xiaoxita †/Shikou	Wufeng †	Harju	Porkuni	443.8
		Katian				Chientangkiangian		Wufeng †		Pirgu	445.2
						Neichianshanian/Hanjiang				Pirgu	449.5
			Vormsi							449.6 *
			Nabala							Johvi †	450 *
			Viru						Rakvere		450.6 *
									Oandu		452 *
		Sandbian							Keila	Idavere †	453
									Haljala		453.9
									Kukruse		456.4 *
									Uhaku	Aluoja †	457.5 *
	Middle Ordovician	Darriwilian				Darriwilian	Guniu †/Hulo		Uhaku		458.4
									Lasnamagi		458.9 *
									Aseri		460.4 *
			Oeland						Kunda		462.9 *
										Valaste †/Hunderum	464.3 *
							Hunjiang †	Dawan †/Daobaowan/Ningkuo			466.3 *
									Volkhov		Langevoja †/Vaana/Saka		467.1 *
		Dapingian				Dapingian			Volkhov				467.3
		Dapingian				Dapingian			Billingen				469.3 *
	Early Ordovician	Floian				Yiyangian							470
										Latorp †			470.1 *
									Hunneberg				473.7 *
		Tremadocian				Xinchangian							Ungurian	477.7
								Lianghekou †						477.9 *
									Varangu					481.3 *
									Pakerort					482.2 *
Cambrian	Furongian	Stage 10							Pakerort	Batyrbaian			Late Cambrian		485.4
															486.3 *
															486.5
		Jiangshanian													489.5
										Aksaian					490.7 *
										Sakian					492.2 *
		Paibian								Sakian					494
	Miaolingian	Guzhangian								Series 3 †			Ayusokkanian		Middle Cambrian	497
		Guzhangian											499.5
		Drumian		Zhanaarykian									500.5
		Drumian		Tuesaian									503
		Wuliuan		Tuesaian									Stage 5 †			504.5
		Wuliuan											Stage 5 †			505.3
	Series 2	Stage 4													Early Cambrian	509
				Toyonian												510 *
				Botomian								512.5 *
		Stage 3		Botomian								514
		Stage 3		Atdabanian								515.6 *
	Terreneuvian	Stage 2		Tommotian								521
		Stage 2										525.5
		Fortunian										529
																	538.8