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. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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

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 China	Paleogene Mammal Ages of Asia		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					Tabenbulakian	Hsandagolian					23.03
	Oligocene	Rupelian					Kekeamuan	Hsandagolian					27.82
	Eocene	Priabonian					Houldjinian/Ergilian/Ulangochuian						33.9
		Bartonian					Sharamurunian/Irdinmanhan/Arshantan						37.71
		Lutetian											41.2
		Ypresian						Bumbanian					47.8
	Paleocene	Thanetian					Gashatan						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				Meishanian			Dorashamian		Makarewan		251.902
						Meishanian					Waiitian		253.2
						Baoqingian							253.4 *
		Wuchiapingian		Longtanian †		Laoshanian			Dzhulfian				254.14
						Laoshanian					Puruhauan		254.2
					Laibinian	257.7 *					Puruhauan
	Guadalupian	Capitanian			Lengwuan	Midian			Aparima	Flettian	259.51
		Wordian			Kuhfengian					Flettian	264.28
										Barettian	266
						Murgabian					266.2 *
		Roadian				Murgabian					266.9
	Cisuralian	Kungurian			Luodianian	Kubergandian					273.01
						Kubergandian				Mangapirian	276
						Bolorian					279.8
		Artinskian									283.5
										Telfordian	285
					Longlinian						285.4 *
						Yakhtashian					286
						Yakhtashian					288.5
		Sakmarian				Sakmarian		290.1
		Asselian			Zisongian	Asselian	293.52
Carboniferous	Pennsylvanian	Gzhelian			Zisongian		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			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					Franconian †/Dresbachian/Millardan	485.4
		Stage 10						Sunwaptan			487.5
		Jiangshanian						Sunwaptan			489.5
		Jiangshanian						Steptoean			493 *
		Paibian						Steptoean			494
	Miaolingian	Guzhangian					Series 3 †	Marjumian			Albertian †	497
		Drumian						Marjumian				500.5
		Wuliuan		Stage 5 †				Topazan				504.5
		Wuliuan		Stage 5 †				Delamaran				506.5
	Series 2	Stage 4						Delamaran			Waucoban †	509
		Stage 4						Dyeran				511 *
		Stage 3						Dyeran				514
								Montezuman				514.8 *
								Begadean				519.9 *
	Terreneuvian	Stage 2										521
	Terreneuvian	Fortunian										529
													538.8