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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Permian of Western Europe	Permian of the Russian Platform		Permian Subages of Germany	Cambrian of Siberia			Cambrian of North America		Devonian Subages
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														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							Buntsandstein							251.902
		Wuchiapingian		Longtanian †		Zechstein										254.14
		Wuchiapingian		Longtanian †		Zechstein	Tatarian	Vyatkian								256.8 *
	Guadalupian	Capitanian				Rotliegendes		Severodvinian	Ohre/Aller							259.51
		Wordian						Urzhumian	Leine							264.28
		Roadian					Kazanian	Povolzhian								266.9
		Roadian					Kazanian	Sokian								270.7 *
	Cisuralian	Kungurian					Kungurian	Irenian/Ufimian								273.01
								Filipovian								276.5 *
								Saraninian								280.1 *
		Artinskian				Autunian	Artinskian	Sarginian								283.5
								Irginian								285.9 *
								Burtsevian								287.8 *
		Sakmarian					Sakmarian	Sterlitamakian								290.1
		Sakmarian					Sakmarian	Tastubian								291.7 *
		Asselian					Asselian	Shikhanian								293.52
								Uskalykian								294.8
					Surenian			297.5
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						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						443.8
		Katian						445.2
		Sandbian						453
	Middle Ordovician	Darriwilian						458.4
	Middle Ordovician	Dapingian						467.3
	Early Ordovician	Floian						470
		Tremadocian						477.7
		Tremadocian						Mansian †		483.55 *
Cambrian	Furongian	Stage 10						Batyrbaian		Tavgian †	Ketyan †/Yurakian	Franconian †/Dresbachian/Millardan	485.4
		Stage 10											Sunwaptan	487.5
		Jiangshanian												489.5
								Aksaian						490.7 *
								Sakian						492.2 *
													Steptoean	493 *
		Paibian												494
		Paibian									Ensyan †/Maduan/Nganasanian			494.7 *
	Miaolingian	Guzhangian						Series 3 †		Ayusokkanian			Marjumian	Albertian †	497
		Guzhangian		Mayan/Menevian						499.5
		Drumian		Mayan/Menevian						500.5
		Wuliuan		Stage 5 †					Amgan/Solvan	Topazan			504.5
		Wuliuan		Stage 5 †						Delamaran			506.5
	Series 2	Stage 4											Waucoban †	509
									Toyonian		Lenian †			510 *
									Toyonian	Dyeran				511 *
									Botomian					512.5 *
		Stage 3												514
										Montezuman				514.8 *
									Atdabanian	Montezuman				515.6 *
									Atdabanian	Begadean				519.9 *
	Terreneuvian	Stage 2							Tommotian					521
		Stage 2							Nemakit-Daldynian					525.5
		Fortunian							Nemakit-Daldynian		Manykaian †			529
																538.8