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. 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. 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. 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

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			Devonian of Czechoslovakia	European Faunal Units	Permian-Jurassic of New Zealand		Cenozoic Subepochs	Silurian of North America			Permian of China
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 †				Villanyian			Late Pliocene					2.58
		Piacenzian					Ruscinian			Late Pliocene					3.1 *
		Zanclean					Ruscinian			Early Pliocene					3.6
	Miocene	Messinian					Turolian			Late Miocene					5.333
		Tortonian					Turolian								7.246
		Tortonian					Vallesian								8.7
		Serravallian					Astaracian			Middle Miocene					11.63
		Langhian					Astaracian			Middle Miocene					13.82
		Burdigalian					Orleanian			Early Miocene					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													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							Oretian						227
		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		251.2					Nelsonian
		Induan		DUrville	Makarewan	251.5
Permian	Lopingian	Changhsingian			Makarewan	Meishanian		251.902
					Waiitian	Meishanian		253.2
						Baoqingian		253.4 *
		Wuchiapingian				Longtanian †		Laoshanian	254.14
					Puruhauan			Laoshanian	254.2
					Puruhauan			Laibinian	257.7 *
	Guadalupian	Capitanian			Aparima	Flettian		Lengwuan	259.51
		Wordian				Flettian		Kuhfengian	264.28
		Wordian				Barettian			266
		Roadian							266.9
	Cisuralian	Kungurian						Luodianian	273.01
		Kungurian				Mangapirian			276
		Artinskian				Mangapirian			283.5
						Telfordian	285
						Telfordian	Longlinian	285.4 *
								288.5
		Sakmarian						290.1
		Asselian					Zisongian	Bursumian †	293.52
Carboniferous	Pennsylvanian	Gzhelian					Zisongian	Virgilian	298.9
		Gzhelian						Virgilian	300.1
		Kasimovian						Missourian	303.7
		Kasimovian						Desmoinesian	305.9 *
		Moscovian	307					Desmoinesian
		Moscovian	Atokan					312.7 *
		Bashkirian	Atokan					315.2
		Bashkirian	Morrowan					318.4 *
	Mississippian	Serpukhovian	Chesterian					323.2
		Visean	Chesterian					330.9
			Meramecian					335.8 *
			Osagean					343.1 *
		Tournaisian	Osagean					346.7
		Tournaisian	Kinderhookian					351.9 *
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								Cayugan	419.2
	Pridoli								Niagaran	422.5 *
	Ludlow	Ludfordian								423
	Ludlow	Gorstian								425.6
	Wenlock	Homerian								Lockportian	427.4
	Wenlock	Sheinwoodian									430.5
	Llandovery	Telychian								Ontarian	433.4
		Aeronian									438.5
											Alexandrian	438.7 *
									Medinan	Clinton		440.1 *
												440.7 *
		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
	Early Ordovician	Tremadocian										Ungurian	477.7
Cambrian	Furongian	Stage 10										Batyrbaian	485.4
		Jiangshanian										Batyrbaian	489.5
												Aksaian	490.7 *
												Sakian	492.2 *
		Paibian										Sakian	494
	Miaolingian	Guzhangian										Series 3 †	Ayusokkanian	497
		Guzhangian												499.5
		Drumian											Zhanaarykian	500.5
		Drumian											Tuesaian	503
		Wuliuan		Stage 5 †									Tuesaian	504.5
		Wuliuan		Stage 5 †										505.3
	Series 2	Stage 4												509
													Toyonian	510 *
													Botomian	512.5 *
		Stage 3											Botomian	514
		Stage 3											Atdabanian	515.6 *
	Terreneuvian	Stage 2											Tommotian	521
															525.5