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
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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			Carbo-Permian of the Russian Platform	Cambrian of North America		Permian of North America		Cambrian Epochs	Permian of Western Europe	Central Paratethys Stages
Neogene	Pliocene	Piacenzian	Tertiary †											2.58
	Pliocene	Zanclean												3.6
	Miocene	Messinian												5.333
		Tortonian											Pannonian	7.246
		Serravallian											Sarmatian	11.63
		Serravallian											Badenian	12.8 *
		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												247.2
	Early Triassic	Induan												251.2
Permian	Lopingian	Changhsingian				Melekhovian								251.902
	Lopingian	Wuchiapingian		Longtanian †								Zechstein		254.14
	Guadalupian	Capitanian							Capitanian			Rotliegendes		259.51
		Wordian							Wordian					264.28
		Wordian				Noginskian			Wordian					264.9 *
		Roadian							Roadian					266.9
	Cisuralian	Kungurian							Leonardian	Cathedralian				273.01
						Pavlovoposadian				Cathedralian				276.8 *
										Hessian				281.9 *
		Artinskian								Hessian		Autunian		283.5
									Wolfcampian	Lenoxian				286.1 *
						Rusavkinian								287.6 *
		Sakmarian												290.1
		Asselian								Nealian				293.52
Carboniferous	Pennsylvanian	Gzhelian												298.9
		Kasimovian				Dorogomilovian								303.7
					Khamovnikian	304.8
					Krevyakinian	305.8 *
		Moscovian			Myachkovian	307
					Podolskian	308.9 *
					Kashirian	311.4 *
					Vereian	313.8
					Melekessian	314.8
		Bashkirian			Melekessian	315.2
					Cheremshanian	316.9 *
					Prikamian	318.6 *
					Severokeltmian	319.9 *
					Krasnopolyanian	321.2 *
					Voznesenian	321.9 *
	Mississippian	Serpukhovian			Zapaltjubian	323.2
					Protvian	324.4 *
					Steshevian	326.8 *
					Tarusian	329 *
		Visean			Venevian	330.9
			Mikhailovian		331.9 *
			Aleksinian		333.7 *
			Tulian		335.8 *
			Bobrikian		339.9 *
			Radaevkian		343.4 *
		Tournaisian	Kosvian		346.7
			Kizelian		350.7 *
			Cherepetian		351.9 *
			Karakubian		354.4 *
			Upinian		356.3 *
			Malevkian		357.6 *
			Gumerovian		358 *
Devonian	Late Devonian	Famennian			358.9
	Late Devonian	Frasnian			372.2
	Middle Devonian	Givetian			382.7
	Middle Devonian	Eifelian			387.7
	Early Devonian	Emsian			393.3
		Pragian			407.6
		Lochkovian			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	Franconian †/Dresbachian/Millardan		Late Cambrian		485.4
										486.3 *
										486.5
										Sunwaptan	487.5
		Jiangshanian								Sunwaptan	489.5
		Jiangshanian								Steptoean	493 *
		Paibian								Steptoean	494
	Miaolingian	Guzhangian				Series 3 †		Marjumian		Albertian †	Middle Cambrian	497
		Drumian						Marjumian				500.5
		Wuliuan						Stage 5 †				Topazan	504.5
		Wuliuan						Stage 5 †				Delamaran	506.5
	Series 2	Stage 4								Waucoban †	Early Cambrian	Delamaran	509
		Stage 4										Dyeran	511 *
		Stage 3										Dyeran	514
												Montezuman	514.8 *
												Begadean	519.9 *
	Terreneuvian	Stage 2											521
	Terreneuvian	Fortunian											529
														538.8