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
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 France	Carboniferous of Western Europe		Permo-Triassic Subages of Eastern Europe	Cambrian of China		Ordovician of the Baltic
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													145
		Kimmeridgian													149.2
		Oxfordian													154.8
	Middle Jurassic	Callovian													161.5
		Bathonian													165.3
		Bajocian													168.2
		Aalenian													170.9
	Early Jurassic	Toarcian													174.7
		Pliensbachian													184.2
		Sinemurian													192.9
		Hettangian													199.5
Triassic	Late Triassic	Rhaetian													201.4
		Norian													208.5
		Carnian													227
	Middle Triassic	Ladinian													237
	Middle Triassic	Anisian													242
	Early Triassic	Olenekian							Vokhmian						247.2
	Early Triassic	Induan							Vokhmian						251.2
Permian	Lopingian	Changhsingian													251.902
	Lopingian	Wuchiapingian		Longtanian †					Late Vyatkian/Early Vyatkian						254.14
	Guadalupian	Capitanian							Late Severodvinian/Early Severodvinian						259.51
		Wordian							Late Urzhumian/Early Urzhumian						264.28
		Roadian							Late Kazanian/Early Kazanian						266.9
	Cisuralian	Kungurian													273.01
		Artinskian													283.5
		Sakmarian													290.1
		Asselian													293.52
		Asselian					Kuzel								297.7
Carboniferous	Pennsylvanian	Gzhelian					Kuzel								298.9
							Stephanian	Stephanian C							300.3 *
								Stephanian B							300.9 *
								Stephanian A							301.4 *
		Kasimovian						Stephanian A							303.7
		Kasimovian						Cantabrian							305 *
		Moscovian						Cantabrian							307
					Westphalian	Westphalian D	307.4 *
						Westphalian C	309.8
						Westphalian B	314.6
		Bashkirian				Westphalian B	315.2
						Westphalian A	317 *
					Namurian	Yeadonian	318.8 *
						Marsdenian	320.2 *
						Kinderscoutian	321.5 *
						Alportian	322 *
						Chokierian	323.1 *
	Mississippian	Serpukhovian				Chokierian	323.2
						Arnsbergian	324 *
						Pendleian	327.4 *
		Visean			Warnantian	Brigantian †	330.9
					Livian	Asbian †	336.3 *
					Moliniacian	Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian			Ivorian		346.7
		Tournaisian	Hastarian		353.7 *
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					Harju	Porkuni		443.8
		Katian						Pirgu		445.2
								Vormsi		449.6 *
								Nabala		Johvi †	450 *
							Viru	Rakvere			450.6 *
								Oandu			452 *
		Sandbian						Keila		Idavere †	453
								Haljala			453.9
								Kukruse			456.4 *
								Uhaku		Aluoja †	457.5 *
	Middle Ordovician	Darriwilian						Uhaku			458.4
								Lasnamagi			458.9 *
								Aseri			460.4 *
							Oeland	Kunda			462.9 *
								Kunda		Valaste †/Hunderum	464.3 *
				Volkhov				Langevoja †/Vaana/Saka			467.1 *
		Dapingian		Volkhov							467.3
		Dapingian		Billingen							469.3 *
	Early Ordovician	Floian							470
								Latorp †		470.1 *
				Hunneberg						473.7 *
		Tremadocian		Hunneberg						477.7
				Varangu						481.3 *
				Pakerort						482.2 *
Cambrian	Furongian	Stage 10		Pakerort				Niuchehean		Taoyuanian †		485.4
												486.3 *
												486.5
		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