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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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			Ordovician of North America						Carbo-Permian of the Russian Platform	Ordovician of China		Permian of the Pamirs	Cretaceous-Cenozoic of New Zealand		Cambrian of Britain		Ordovician of Britain
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			Melekhovian	Dorashamian	Buntsandstein	251.902
	Lopingian	Wuchiapingian				Longtanian †	Buntsandstein	Dzhulfian	254.14
	Guadalupian	Capitanian					Midian	Ohre/Aller	259.51
		Wordian						Leine	264.28
					Noginskian				264.9 *
							Murgabian		266.2 *
		Roadian					Murgabian		266.9
	Cisuralian	Kungurian					Kubergandian		273.01
					Pavlovoposadian		Kubergandian		276.8 *
							Bolorian		279.8
		Artinskian					Bolorian		283.5
							Yakhtashian		286
					Rusavkinian		Yakhtashian		287.6 *
		Sakmarian					Sakmarian		290.1
		Asselian					Asselian		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			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		Cincinnatian		Gamachian			Hirnantian	Xiaoxita †/Shikou	Wufeng †	Ashgill	Hirnantian	443.8
		Katian				Gamachian			Chientangkiangian				Rawtheyan	445.2
						Richmondian							Rawtheyan	446 *
								Cautleyan					448.9 *
								Pusgillian					449.3 *
								Pusgillian	Neichianshanian/Hanjiang				449.5
								Caradoc				Streffordian	Onnian †	449.6 *
						Maysvillian								Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
						Edenian									450.4 *
				Mohawkian		Chatfieldian									451.1 *
												Cheneyan			451.5 *
												Burrellian			452.7 *
		Sandbian					453
							Actonian †						453.2 *
						Turinian	Actonian †						453.7 *
							Marshbrookian †						Woolstonian †		454.2 *
							Longvillian †								455.2 *
												Aurelucian			456.8 *
				Whiterockian										Canadian †	Chazyan †/Marmor	457 *
							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
									Arenig	Fennian						468.4 *
						Rangerian										469.1 *
	Early Ordovician	Floian		Ibexian		Blackhillsian	Jeffersonian †								Cassinian †	Yiyangian	470
						Blackhillsian				Whitlandian							471.1 *
						Tulean				Whitlandian							473.9 *
										Moridunian							474.3 *
		Tremadocian							Xinchangian	Tremadoc						Migneintian	477.7
											Lianghekou †						477.9 *
						Stairsian											480.3 *
						Stairsian										Cressagian	480.8 *
						Skullrockian									Demingian †		482 *
																	Mansian †	483.55 *
																	Mansian †	485 *
Cambrian	Furongian	Stage 10															Merioneth	Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
																		Dolgellian/Trempealeauan				487.5
																		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