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. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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
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
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

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			European Faunal Units	Ordovician of China			Permian of the Pamirs	Cretaceous-Cenozoic of New Zealand		Cambrian of Britain	Ordovician of Britain				Silurian of England
Quaternary	Holocene	Meghalayan									Wanganui	Haweran							0
		Northgrippian																	0.0042
		Greenlandian																	0.0082
	Pleistocene	Late Pleistocene																	0.0117
		Chibanian																	0.129
		Chibanian										Castlecliffian							0.34
		Calabrian										Castlecliffian							0.774
		Calabrian										Nukumaruan							1.63
		Gelasian										Nukumaruan							1.8
		Gelasian										Mangapanian							2.4
Neogene	Pliocene	Piacenzian	Tertiary †			Villanyian						Mangapanian							2.58
						Villanyian						Waipipian							3
						Ruscinian													3.1 *
		Zanclean																	3.6
		Zanclean										Opoitian							3.7
	Miocene	Messinian				Turolian					Taranaki	Kapitean							5.333
		Messinian										Tongaporutuan							7.2
		Tortonian																	7.246
						Vallesian													8.7
						Vallesian					Southland	Waiauan							11.04
		Serravallian				Astaracian						Waiauan							11.63
		Serravallian										Lillburnian							13.05
		Langhian										Lillburnian							13.82
												Clifdenian							15.1
											Pareora	Altonian							15.9
		Burdigalian				Orleanian						Altonian							15.98
						Orleanian						Otaian							18.7
						Agenian													20
		Aquitanian																	20.44
		Aquitanian									Landon	Waitakian							21.7
Paleogene	Oligocene	Chattian										Waitakian							23.03
												Duntroonian							25.2
												Whaingaroan							27.3
		Rupelian																	27.82
	Eocene	Priabonian																	33.9
											Arnold	Runangan							34.6
												Kaiatan							36.7
		Bartonian										Kaiatan							37.71
		Bartonian										Bortonian							39.1
		Lutetian										Bortonian							41.2
											Dannevirke	Porangan							42.6
												Heretaungan							45.7
		Ypresian										Heretaungan							47.8
												Mangaorapan							48.9
												Waipawan							52
	Paleocene	Thanetian										Teurian							56
		Selandian																	59.2
		Danian																	61.6
Cretaceous	Late Cretaceous	Maastrichtian									Mata	Haumurian							66
		Campanian										Haumurian							72.1
		Santonian										Piripauan							83.6
		Santonian									Raukumara	Teratan							86.1
		Coniacian																	86.3
		Turonian																	89.8
												Mangaotanean							90.5
												Arowhanan							93.7
		Cenomanian										Arowhanan							93.9
											Clarence	Ngaterian							95.2
												Motuan							99.5
	Early Cretaceous	Albian										Motuan							100.5
												Urutawan							103.3
											Taitai	Korangan							108.4
		Aptian										Korangan							113
		Aptian																	117.5
		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			Dorashamian		Buntsandstein	251.902
	Lopingian	Wuchiapingian			Longtanian †		Buntsandstein	Dzhulfian	254.14
	Guadalupian	Capitanian					Midian	Ohre/Aller	259.51
		Wordian					Midian	Leine	264.28
		Wordian					Murgabian	Leine	266.2 *
		Roadian					Murgabian		266.9
	Cisuralian	Kungurian					Kubergandian		273.01
		Kungurian					Bolorian		279.8
		Artinskian				283.5	Bolorian
		Artinskian				Yakhtashian	286
		Sakmarian				Sakmarian	290.1
		Asselian				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		Red Downtonian/Temeside Shales/Downton Castle				Whitcliffe/Leintwardine		419.2
	Pridoli		Red Downtonian/Temeside Shales/Downton Castle				Bringewood/Elton		421.3
	Ludlow	Ludfordian	Coalbrookdale				Wenlock (England)/Tickwood		423
		Gorstian							425.6
		Gorstian					Buildwas		426.4 *
	Wenlock	Homerian					Buildwas		427.4
		Homerian	Wych				Woolhope		428.4 *
		Sheinwoodian							430.5
	Llandovery	Telychian							433.4
		Telychian							436.3 *
		Aeronian							438.5
		Aeronian	Cowleigh Park						439.3 *
		Rhuddanian	Cowleigh Park						440.8
Ordovician	Late Ordovician	Hirnantian	Hirnantian						Xiaoxita †/Shikou	Wufeng †	Ashgill		Hirnantian	443.8
		Katian	Chientangkiangian										Rawtheyan	445.2
												Cautleyan	448.9 *
												Pusgillian	449.3 *
			Neichianshanian/Hanjiang									Pusgillian	449.5
											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	Darriwilian	Guniu †/Hulo					Llanvirn		Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
				Guniu †/Hulo							Abereiddian/Early Llanvirn			461.3 *
				Hunjiang †						Dawan †/Daobaowan/Ningkuo				466.3 *
		Dapingian	Dapingian											467.3
		Dapingian	Dapingian						Arenig		Fennian			468.4 *
	Early Ordovician	Floian	Yiyangian								Fennian			470
											Whitlandian			471.1 *
											Moridunian			474.3 *
		Tremadocian	Xinchangian						Tremadoc		Migneintian			477.7
										Lianghekou †	Migneintian			477.9 *
											Cressagian			480.8 *
											Cressagian			Mansian †	483.55 *
														Mansian †	485 *
Cambrian	Furongian	Stage 10								Merioneth				Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Stage 10												Festiniogian				489.2 *
		Jiangshanian																489.5
								Aksaian							490.7 *
								Sakian							492.2 *
														Maentwrogian	493.1 *
		Paibian													494
		Paibian													Ensyan †/Maduan/Nganasanian		494.7 *
	Miaolingian	Guzhangian						Series 3 †		St Davids					Ayusokkanian			497
		Guzhangian													Mayan/Menevian			499.5
		Drumian				500.5									Mayan/Menevian
		Wuliuan				Stage 5 †									Amgan/Solvan			504.5
	Series 2	Stage 4								Caerfai					Amgan/Solvan			509
															Toyonian	Lenian †		510 *
															Botomian			512.5 *
		Stage 3													Botomian			514
		Stage 3													Atdabanian			515.6 *
	Terreneuvian	Stage 2													Tommotian			521
		Stage 2													Nemakit-Daldynian			525.5
		Fortunian													Nemakit-Daldynian	Manykaian †		529
																			538.8