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
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
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
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			Cretaceous-Cenozoic of New Zealand		Cambrian of Britain		Ordovician of Britain				Silurian of England		Permian Subages of Germany
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 †				Mangapanian										2.58
		Piacenzian					Waipipian										3
		Zanclean					Waipipian										3.6
		Zanclean					Opoitian										3.7
	Miocene	Messinian				Taranaki	Kapitean										5.333
		Messinian					Tongaporutuan										7.2
		Tortonian					Tongaporutuan										7.246
		Tortonian				Southland	Waiauan										11.04
		Serravallian					Waiauan										11.63
		Serravallian					Lillburnian										13.05
		Langhian					Lillburnian										13.82
							Clifdenian										15.1
						Pareora	Altonian										15.9
		Burdigalian					Altonian										15.98
		Burdigalian					Otaian										18.7
		Aquitanian					Otaian										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			Buntsandstein	251.902
	Lopingian	Wuchiapingian			Buntsandstein	Longtanian †		254.14
	Guadalupian	Capitanian				Ohre/Aller		259.51
		Wordian				Leine		264.28
		Roadian						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							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	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 *
				Longvillian †			Aurelucian		456.8 *
				Soudleyan †/Harnagian/Costonian			Aurelucian				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									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										Mayan/Menevian			500.5
		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