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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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			Permian of the Russian Platform		Cambrian of Australia	Cambrian of Siberia			Permo-Triassic Subages of Eastern Europe	Neogene Mammal Ages of China	Permian of the Salt Range	Permian of Western Europe	Cretaceous Subepochs	Ordovician of Britain
Quaternary	Pleistocene	Late Pleistocene											Nihewanian					0.0117
		Chibanian																0.129
		Calabrian																0.774
		Gelasian																1.8
Neogene	Pliocene	Piacenzian	Tertiary †										Yushean					2.58
		Zanclean											Yushean					3.6
		Zanclean											Baodean					4.9
	Miocene	Messinian																5.333
		Tortonian																7.246
		Tortonian											Tunggurian					11.1
		Serravallian											Tunggurian					11.63
		Langhian											Shanwangian					13.82
		Burdigalian											Shanwangian					15.98
		Burdigalian											Xiejiaan					16.9
		Aquitanian											Xiejiaan					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														Senonian		66
		Campanian																72.1
		Santonian																83.6
		Coniacian																86.3
		Turonian																89.8
		Cenomanian																93.9
	Early Cretaceous	Albian														Gallic		100.5
		Aptian																113
		Barremian																121.4
		Hauterivian														Neocomian		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
		Induan																251.2
		Induan												Kathwai				251.5 *
Permian	Lopingian	Changhsingian												Kathwai				251.902
																		252.4 *
														Chhidru				252.9 *
		Wuchiapingian		Longtanian †								Late Vyatkian/Early Vyatkian		Chhidru	Zechstein			254.14
														Kalabagh				255 *
														Wargal				256 *
						Tatarian	Vyatkian											256.8 *
	Guadalupian	Capitanian					Severodvinian					Late Severodvinian/Early Severodvinian			Rotliegendes			259.51
		Wordian					Urzhumian					Late Urzhumian/Early Urzhumian						264.28
								265.3 *
					Amb			266.1 *
		Roadian			Amb	Kazanian	Povolzhian	Late Kazanian/Early Kazanian	266.9
		Roadian			Sokian	Kazanian		Late Kazanian/Early Kazanian	270.7 *
	Cisuralian	Kungurian			Kungurian	Irenian/Ufimian			273.01
						Filipovian			276.5 *
						Saraninian			280.1 *
		Artinskian			Artinskian	Sarginian			Autunian	283.5
						Irginian				285.9 *
						Burtsevian				287.8 *
		Sakmarian			Sakmarian	Sterlitamakian				290.1
		Sakmarian			Sakmarian	Tastubian				291.7 *
		Asselian			Asselian	Shikhanian				293.52
						Uskalykian				294.8
						Surenian				297.5
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	427.4
	Wenlock	Sheinwoodian	430.5
	Llandovery	Telychian	433.4
		Aeronian	438.5
		Rhuddanian	440.8
Ordovician	Late Ordovician	Hirnantian	Ashgill							Hirnantian	443.8
		Katian								Rawtheyan	445.2
										Cautleyan	448.9 *
										Pusgillian	449.3 *
			Caradoc							Streffordian	Onnian †	449.6 *
										Cheneyan		451.5 *
										Burrellian		452.7 *
		Sandbian										453
											Actonian †	453.2 *
											Marshbrookian †	Woolstonian †	454.2 *
											Longvillian †		455.2 *
										Aurelucian	Longvillian †		456.8 *
										Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian	Llanvirn							Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian								Abereiddian/Early Llanvirn			461.3 *
		Dapingian								Abereiddian/Early Llanvirn			467.3
		Dapingian	Arenig							Fennian			468.4 *
	Early Ordovician	Floian								Fennian			470
										Whitlandian			471.1 *
										Moridunian			474.3 *
		Tremadocian	Tremadoc							Migneintian			477.7
										Cressagian			480.8 *
										Cressagian			Mansian †	483.55 *
													Mansian †	485 *
Cambrian	Furongian	Stage 10											Datsonian	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Stage 10		Payntonian									486.8 *
		Jiangshanian		Iverian									489.5
													Aksaian	490.7 *
													Sakian	492.2 *
		Paibian		Idamean										494
		Paibian		Idamean			Ensyan †/Maduan/Nganasanian							494.7 *
	Miaolingian	Guzhangian		Series 3 †			Mindyallan	Ayusokkanian							497
							Boomerangian	Ayusokkanian							499
							Boomerangian	Mayan/Menevian							499.5
		Drumian					Undillan								500.5
		Drumian					Floran								503
		Wuliuan					Stage 5 †	Templetonian							Amgan/Solvan	504.5
		Wuliuan					Stage 5 †	Ordian								507.8 *
	Series 2	Stage 4														509
													Toyonian		Lenian †	510 *
													Toyonian			510.8 *
													Botomian			512.5 *
		Stage 3			514								Botomian
		Stage 3			Atdabanian				515.6 *
	Terreneuvian	Stage 2			Tommotian				521
		Stage 2			Nemakit-Daldynian				525.5
		Fortunian			Nemakit-Daldynian	Manykaian †			529
																		538.8