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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Cambrian of China		Devonian Subages	Permian of the Pamirs	Permian-Jurassic of New Zealand		Cambrian of North America
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								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									Nelsonian			251.2
		Induan								DUrville	Makarewan			251.5
Permian	Lopingian	Changhsingian							Dorashamian		Makarewan			251.902
		Changhsingian							Dorashamian		Waiitian			253.2
		Wuchiapingian		Longtanian †					Dzhulfian		Waiitian			254.14
		Wuchiapingian		Longtanian †					Dzhulfian		Puruhauan			254.2
	Guadalupian	Capitanian							Midian	Aparima	Flettian			259.51
		Wordian			264.28						Flettian
					Barettian	266
						Murgabian	266.2 *
		Roadian				Murgabian	266.9
	Cisuralian	Kungurian				Kubergandian	273.01
					Mangapirian	Kubergandian	276
						Bolorian	279.8
		Artinskian					283.5
					Telfordian		285
					Telfordian	Yakhtashian	286
						Yakhtashian		288.5
		Sakmarian				Sakmarian		290.1
		Asselian				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	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
	Early Ordovician	Tremadocian						477.7
Cambrian	Furongian	Stage 10						Niuchehean	Taoyuanian †	Franconian †/Dresbachian/Millardan	485.4
		Stage 10						Niuchehean			Sunwaptan	487.5
		Jiangshanian						Jiangshanian			Sunwaptan	489.5
		Jiangshanian						Jiangshanian			Steptoean	493 *
		Paibian						Paibian				494
		Paibian						Paibian	Waergangian †/Youshuanian			494.9 *
	Miaolingian	Guzhangian						Series 3 †	Guzhangian	Wangcunian †	Marjumian	Albertian †	497
		Drumian							Drumian	Wangcunian †	Marjumian		500.5
		Wuliuan		Stage 5 †					Wuliuan/Taijangian		Topazan		504.5
		Wuliuan		Stage 5 †					Wuliuan/Taijangian		Delamaran		506.5
	Series 2	Stage 4							Duyunian		Delamaran	Waucoban †	509
		Stage 4							Duyunian		Dyeran		511 *
		Stage 3							Nangaoian		Dyeran		514
											Montezuman		514.8 *
											Begadean		519.9 *
	Terreneuvian	Stage 2							Meishucunian				521
		Fortunian							Meishucunian				529
		Fortunian							Jinnigian				530.7
														538.8