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
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

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	Silurian of England		Ten Million Year Bins	Permian of the Salt Range	Permian-Jurassic of New Zealand		Devonian of France
Quaternary	Holocene	Meghalayan							Cenozoic 6					0
		Northgrippian												0.0042
		Greenlandian												0.0082
	Pleistocene	Late Pleistocene												0.0117
		Chibanian												0.129
		Calabrian												0.774
		Gelasian												1.8
Neogene	Pliocene	Piacenzian	Tertiary †											2.58
	Pliocene	Zanclean												3.6
	Miocene	Messinian												5.333
		Tortonian												7.246
		Serravallian							Cenozoic 5					11.63
		Langhian												13.82
		Burdigalian												15.98
		Aquitanian												20.44
Paleogene	Oligocene	Chattian							Cenozoic 4					23.03
	Oligocene	Rupelian							Cenozoic 4					27.82
	Eocene	Priabonian							Cenozoic 3					33.9
		Bartonian							Cenozoic 3					37.71
		Lutetian							Cenozoic 2					41.2
		Ypresian							Cenozoic 2					47.8
	Paleocene	Thanetian							Cenozoic 1					56
		Selandian												59.2
		Danian												61.6
Cretaceous	Late Cretaceous	Maastrichtian							Cretaceous 8					66
		Campanian							Cretaceous 7					72.1
		Santonian							Cretaceous 6					83.6
		Coniacian												86.3
		Turonian												89.8
		Cenomanian							Cretaceous 5					93.9
	Early Cretaceous	Albian							Cretaceous 4					100.5
		Aptian							Cretaceous 3					113
		Barremian							Cretaceous 2					121.4
		Hauterivian							Cretaceous 2					125.77
		Valanginian							Cretaceous 1					132.6
		Berriasian							Cretaceous 1					139.8
Jurassic	Late Jurassic	Tithonian							Jurassic 6		Oteke	Puaroan		145
		Kimmeridgian							Jurassic 5		Oteke	Puaroan		149.2
											Kawhia	Ohauan		150
												Heterian		154.5
		Oxfordian												154.8
	Middle Jurassic	Callovian												161.5
		Callovian										Temaikan		164.3
		Bathonian							Jurassic 4					165.3
		Bajocian							Jurassic 4					168.2
		Aalenian							Jurassic 3					170.9
	Early Jurassic	Toarcian												174.7
		Toarcian									Herangi	Ururoan		176
		Pliensbachian							Jurassic 2			Ururoan		184.2
		Pliensbachian							Jurassic 2			Aratauran		188.9
		Sinemurian							Jurassic 1					192.9
		Hettangian							Jurassic 1					199.5
Triassic	Late Triassic	Rhaetian							Triassic 4		Balfour	Otapirian		201.4
		Norian										Warepan		208.5
												Otamitan		217
												Oretian		221
		Carnian							Triassic 3			Oretian		227
		Carnian							Triassic 3		Gore	Kaihikuan		227.5
	Middle Triassic	Ladinian							Triassic 2			Kaihikuan		237
		Ladinian										Etalian		238
		Anisian										Etalian		242
		Anisian										Malakovian		246
	Early Triassic	Olenekian							Triassic 1			Malakovian		247.2
		Olenekian										Nelsonian		249
		Induan		251.2								Nelsonian
		Induan		Kathwai	DUrville	Makarewan	251.5 *
Permian	Lopingian	Changhsingian		Kathwai			Permian 4	251.902
								252.4 *
				Chhidru				252.9 *
						Waiitian		253.2
		Wuchiapingian				Waiitian		Longtanian †	254.14
						Puruhauan			254.2
				Kalabagh					255 *
				Wargal					256 *
	Guadalupian	Capitanian				Aparima		Flettian	259.51
		Wordian							264.28
									265.3 *
								Barettian	266
				Amb					266.1 *
		Roadian		Amb			Permian 3		266.9
		Roadian					Permian 3		270.7 *
	Cisuralian	Kungurian					Permian 2		273.01
		Kungurian						Mangapirian	276
		Artinskian						Mangapirian	283.5
								Telfordian	285
									288.5
		Sakmarian							290.1
		Asselian					Permian 1		293.52
Carboniferous	Pennsylvanian	Gzhelian	Carboniferous 5				298.9
		Kasimovian	Carboniferous 5				303.7
		Moscovian	Carboniferous 4				307
		Bashkirian	Carboniferous 4				315.2
	Mississippian	Serpukhovian	Carboniferous 3				323.2
		Visean	Carboniferous 2				330.9
		Tournaisian	Carboniferous 1				346.7
Devonian	Late Devonian	Famennian	Devonian 5				Famennian		358.9
	Late Devonian	Frasnian	Devonian 4				Frasnian		372.2
	Middle Devonian	Givetian	Srbsko				Devonian 3		Givetian	382.7
	Middle Devonian	Eifelian	Chotec				Devonian 3		Couvinien	387.7
	Early Devonian	Emsian	Daleje/Zlichovian				Devonian 2			393.3
		Pragian	Pragian				Devonian 1			407.6
		Pragian	Pragian						Coblencien	408.2 *
		Lochkovian	Lochkovian						Gedinnine	410.8
Silurian	Pridoli						Red Downtonian/Temeside Shales/Downton Castle		Whitcliffe/Leintwardine	Silurian 2		419.2
	Pridoli						Red Downtonian/Temeside Shales/Downton Castle		Bringewood/Elton			421.3
	Ludlow	Ludfordian					Coalbrookdale		Wenlock (England)/Tickwood			423
		Gorstian										425.6
		Gorstian							Buildwas			426.4 *
	Wenlock	Homerian							Buildwas			427.4
		Homerian					Wych		Woolhope			428.4 *
		Sheinwoodian										430.5
	Llandovery	Telychian								Silurian 1		433.4
		Telychian										436.3 *
		Aeronian										438.5
		Aeronian					Cowleigh Park					439.3 *
		Rhuddanian					Cowleigh Park					440.8
Ordovician	Late Ordovician	Hirnantian								Ordovician 5		443.8
		Katian								Ordovician 5		445.2
		Sandbian								Ordovician 4		453
	Middle Ordovician	Darriwilian								Ordovician 3		458.4
	Middle Ordovician	Dapingian								Ordovician 2		467.3
	Early Ordovician	Floian								Ordovician 2		470
	Early Ordovician	Tremadocian								Ordovician 1		477.7
Cambrian	Furongian	Stage 10								Cambrian 5		485.4
		Jiangshanian										489.5
		Paibian										494
	Miaolingian	Guzhangian								Series 3 †		Cambrian 4	497
		Drumian										Cambrian 4	500.5
		Wuliuan			Stage 5 †							Cambrian 3	504.5
	Series 2	Stage 4										Cambrian 3	509
	Series 2	Stage 3										Cambrian 2	514
	Terreneuvian	Stage 2										Cambrian 2	521
	Terreneuvian	Fortunian										Cambrian 1	529
														538.8