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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
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

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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Ordovician of the Baltic				Central Paratethys Stages	Permo-Triassic Subages of Eastern Europe	Cambrian of Kazakhstan	Permian Subages of Germany	Cambrian of China
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									Vokhmian					247.2
	Early Triassic	Induan									Vokhmian					251.2
Permian	Lopingian	Changhsingian											Buntsandstein			251.902
	Lopingian	Wuchiapingian		Longtanian †							Late Vyatkian/Early Vyatkian		Buntsandstein			254.14
	Guadalupian	Capitanian									Late Severodvinian/Early Severodvinian		Ohre/Aller			259.51
		Wordian									Late Urzhumian/Early Urzhumian		Leine			264.28
		Roadian									Late Kazanian/Early Kazanian					266.9
	Cisuralian	Kungurian														273.01
		Artinskian														283.5
		Sakmarian														290.1
		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			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			Gleedonian	427.4
		Homerian			Whitwellian	429.7 *
		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			Ungurian	477.7
						Varangu				481.3 *
						Pakerort				482.2 *
Cambrian	Furongian	Stage 10				Pakerort			Batyrbaian	Niuchehean		Taoyuanian †		485.4
														486.3 *
														486.5
		Jiangshanian								Jiangshanian				489.5
									Aksaian					490.7 *
									Sakian					492.2 *
		Paibian								Paibian				494
		Paibian								Paibian		Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian							Series 3 †	Ayusokkanian		Guzhangian		Wangcunian †	497
		Guzhangian										Guzhangian			499.5
		Drumian		Zhanaarykian						Drumian		500.5
		Drumian		Tuesaian						Drumian		503
		Wuliuan		Tuesaian						Stage 5 †		Wuliuan/Taijangian		504.5
		Wuliuan								Stage 5 †	505.3	Wuliuan/Taijangian
	Series 2	Stage 4									Duyunian	509
				Toyonian								510 *
				Botomian								512.5 *
		Stage 3		Botomian							Nangaoian	514
		Stage 3		Atdabanian							Nangaoian	515.6 *
	Terreneuvian	Stage 2		Tommotian							Meishucunian	521
		Stage 2										525.5
		Fortunian										529
		Fortunian									Jinnigian	530.7
																538.8