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		Carboniferous of North America	Permian of the Salt Range	Permian-Jurassic of New Zealand		Devonian of France
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							Kathwai	DUrville	Makarewan		251.5 *
Permian	Lopingian	Changhsingian							Kathwai				251.902
													252.4 *
									Chhidru				252.9 *
											Waiitian		253.2
		Wuchiapingian		Longtanian †							Waiitian		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		266.9
		Roadian						270.7 *
	Cisuralian	Kungurian						273.01
		Kungurian					Mangapirian	276
		Artinskian					Mangapirian	283.5
							Telfordian	285
								288.5
		Sakmarian						290.1
		Asselian						Bursumian †	293.52
Carboniferous	Pennsylvanian	Gzhelian	Virgilian					298.9
		Kasimovian	Missourian					303.7
		Kasimovian	Desmoinesian					305.9 *
		Moscovian	Desmoinesian					307
		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						Famennian	358.9
	Late Devonian	Frasnian						Frasnian	372.2
	Middle Devonian	Givetian						Givetian	382.7
	Middle Devonian	Eifelian						Couvinien	387.7
	Early Devonian	Emsian							393.3
		Pragian							407.6
		Pragian						Coblencien	408.2 *
		Lochkovian						Gedinnine	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
	Early Ordovician	Tremadocian							477.7
Cambrian	Furongian	Stage 10							Niuchehean	Taoyuanian †	485.4
		Jiangshanian							Jiangshanian		489.5
		Paibian							Paibian		494
		Paibian							Paibian	Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian							Series 3 †	Guzhangian	Wangcunian †	497
		Drumian								Drumian	Wangcunian †	500.5
		Wuliuan		Stage 5 †						Wuliuan/Taijangian		504.5
	Series 2	Stage 4								Duyunian		509
	Series 2	Stage 3								Nangaoian		514
	Terreneuvian	Stage 2								Meishucunian		521
		Fortunian								Meishucunian		529
		Fortunian								Jinnigian		530.7
													538.8