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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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. 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
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 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			Cenozoic Subepochs	Permian of the Russian Platform		Permian of Western Europe	Permian of China	Cambrian of Siberia			European Faunal Units	Cretaceous Subepochs	Ammonite Chrons of North America
Quaternary	Pleistocene	Late Pleistocene				Late Pleistocene													0.0117
		Chibanian				Middle Pleistocene													0.129
		Calabrian				Early Pleistocene													0.774
		Gelasian				Early Pleistocene													1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Late Pliocene								Villanyian					2.58
		Piacenzian				Late Pliocene								Ruscinian					3.1 *
		Zanclean				Early Pliocene								Ruscinian					3.6
	Miocene	Messinian				Late Miocene								Turolian					5.333
		Tortonian												Turolian					7.246
		Tortonian												Vallesian					8.7
		Serravallian				Middle Miocene								Astaracian					11.63
		Langhian				Middle Miocene								Astaracian					13.82
		Burdigalian				Early Miocene								Orleanian					15.98
		Burdigalian												Agenian					20
		Aquitanian												Agenian					20.44
Paleogene	Oligocene	Chattian				Late Oligocene													23.03
	Oligocene	Rupelian				Early Oligocene													27.82
	Eocene	Priabonian				Late Eocene													33.9
		Bartonian				Middle Eocene													37.71
		Lutetian				Middle Eocene													41.2
		Ypresian				Early Eocene													47.8
	Paleocene	Thanetian				Late Paleocene													56
		Selandian				Middle Paleocene													59.2
		Danian				Early Paleocene													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														Epizigzagiceras			168.2
		Bajocian														Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense			168.4
		Aalenian														Howelli/Scissum/Westermanni			170.9
	Early Jurassic	Toarcian														Yakounensis/Hillebrandti/Crassicosta			174.7
																Planulata			179.3 *
																Planulata		Arnioceras arnouldi	179.8 *
																Kanense			181.3 *
																Carlottense			182.3 *
																Kunae			183.5 *
		Pliensbachian														Kunae			184.2
																Freboldi			185.1 *
																Whiteavesi/Imlayi	Tetraspidoceras		186.2 *
																	Tetraspidoceras		189.2 *
																Plesechioceras harbledownense/Asteroceras varians/Coroniceras	Canadensis		190.3 *
		Sinemurian																	192.9
																Pseudaetomoceras		Psiloceras	196.4 *
																Franziceras/Euphyllites			196.5 *
		Hettangian														Franziceras/Euphyllites			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 †	Zechstein		Laoshanian	254.14
							Laoshanian	Tatarian	Vyatkian	256.8 *
							Laibinian		Vyatkian	257.7 *
	Guadalupian	Capitanian			Severodvinian		Rotliegendes		Lengwuan	259.51
		Wordian			Urzhumian				Kuhfengian	264.28
		Roadian			Kazanian			Povolzhian		266.9
		Roadian			Kazanian			Sokian		270.7 *
	Cisuralian	Kungurian			Kungurian			Irenian/Ufimian	Luodianian	273.01
								Filipovian		276.5 *
								Saraninian		280.1 *
		Artinskian			Artinskian		Sarginian	Autunian		283.5
							Sarginian		Longlinian	285.4 *
							Irginian			285.9 *
							Burtsevian			287.8 *
		Sakmarian			Sakmarian		Sterlitamakian			290.1
		Sakmarian			Sakmarian		Tastubian			291.7 *
		Asselian			Asselian		Shikhanian		Zisongian	293.52
							Uskalykian			294.8
							Surenian			297.5
Carboniferous	Pennsylvanian	Gzhelian								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				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					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	Datsonian	485.4
		Stage 10									Payntonian	486.8 *
		Jiangshanian									Iverian	489.5
						Aksaian						490.7 *
						Sakian						492.2 *
		Paibian									Idamean	494
		Paibian								Ensyan †/Maduan/Nganasanian	Idamean	494.7 *
	Miaolingian	Guzhangian				Series 3 †			Ayusokkanian			Mindyallan	497
									Ayusokkanian			Boomerangian	499
									Mayan/Menevian			Boomerangian	499.5
		Drumian										Undillan	500.5
		Drumian										Floran	503
		Wuliuan		Stage 5 †					Amgan/Solvan			Templetonian	504.5
		Wuliuan		Stage 5 †								Ordian	507.8 *
	Series 2	Stage 4											509
									Toyonian	Lenian †			510 *
									Toyonian				510.8 *
									Botomian				512.5 *
		Stage 3							Botomian				514
		Stage 3							Atdabanian				515.6 *
	Terreneuvian	Stage 2							Tommotian				521
		Stage 2							Nemakit-Daldynian				525.5
		Fortunian							Nemakit-Daldynian	Manykaian †			529
																			538.8