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
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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 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			Devonian of Germany	Cambrian of Siberia			Cambrian of Kazakhstan	Devonian of France	Cambrian of China		Permian of China	Permian-Jurassic of New Zealand		Ordovician of the Baltic			Ammonite Chrons of North America
Neogene	Pliocene	Piacenzian	Tertiary †																				2.58
	Pliocene	Zanclean																					3.6
	Miocene	Messinian																					5.333
		Tortonian																					7.246
		Serravallian																					11.63
		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													Oteke	Puaroan							145
		Kimmeridgian													Oteke	Puaroan							149.2
															Kawhia	Ohauan							150
																Heterian							154.5
		Oxfordian																					154.8
	Middle Jurassic	Callovian																					161.5
		Callovian														Temaikan							164.3
		Bathonian																					165.3
		Bajocian																		Epizigzagiceras			168.2
		Bajocian																		Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense			168.4
		Aalenian																		Howelli/Scissum/Westermanni			170.9
	Early Jurassic	Toarcian																		Yakounensis/Hillebrandti/Crassicosta			174.7
															Herangi	Ururoan				Yakounensis/Hillebrandti/Crassicosta			176
																				Planulata			179.3 *
																				Planulata		Arnioceras arnouldi	179.8 *
																				Kanense			181.3 *
																				Carlottense			182.3 *
																				Kunae			183.5 *
		Pliensbachian																		Kunae			184.2
																				Freboldi			185.1 *
																				Whiteavesi/Imlayi	Tetraspidoceras		186.2 *
																Aratauran				Whiteavesi/Imlayi			188.9
																							189.2 *
																				Plesechioceras harbledownense/Asteroceras varians/Coroniceras	Canadensis		190.3 *
		Sinemurian																					192.9
																				Pseudaetomoceras		Psiloceras	196.4 *
																				Franziceras/Euphyllites			196.5 *
		Hettangian																		Franziceras/Euphyllites			199.5
Triassic	Late Triassic	Rhaetian													Balfour	Otapirian							201.4
		Norian														Warepan							208.5
																Otamitan							217
																Oretian							221
		Carnian														Oretian							227
		Carnian													Gore	Kaihikuan							227.5
	Middle Triassic	Ladinian														Kaihikuan							237
		Ladinian		Etalian	238
		Anisian		Etalian	242
		Anisian		Malakovian	246
	Early Triassic	Olenekian		Malakovian	247.2
		Olenekian		Nelsonian	249
		Induan		Nelsonian	251.2
		Induan		DUrville	Makarewan	251.5
Permian	Lopingian	Changhsingian			Makarewan	Meishanian	251.902
					Waiitian	Meishanian	253.2
						Baoqingian	253.4 *
		Wuchiapingian				Longtanian †	Laoshanian	254.14
					Puruhauan		Laoshanian	254.2
					Puruhauan		Laibinian	257.7 *
	Guadalupian	Capitanian			Lengwuan	Aparima	Flettian	259.51
		Wordian			Kuhfengian		Flettian	264.28
		Wordian					Barettian	266
		Roadian						266.9
	Cisuralian	Kungurian	Luodianian		273.01
		Kungurian			Mangapirian		276
		Artinskian			Mangapirian		283.5
					Telfordian		285
			Longlinian		Telfordian		285.4 *
							288.5
		Sakmarian					290.1
		Asselian	Zisongian				293.52
Carboniferous	Pennsylvanian	Gzhelian	Zisongian				298.9
		Gzhelian					300.1
		Kasimovian					303.7
		Moscovian					307
		Bashkirian					315.2
	Mississippian	Serpukhovian					323.2
		Visean					330.9
		Tournaisian					346.7
Devonian	Late Devonian	Famennian					Wocklum/Dasberg/Hemberg/Nehden	Famennian	358.9
	Late Devonian	Frasnian					Adorf	Frasnian	372.2
	Middle Devonian	Givetian					Givetian	Givetian	382.7
	Middle Devonian	Eifelian					Eifelian	Couvinien	387.7
	Early Devonian	Emsian					Emsian		393.3
		Pragian					Siegen		407.6
		Pragian					Siegen	Coblencien	408.2 *
		Lochkovian					Gedinnine	Gedinnine	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							Harju	Porkuni	Ashgill	Hirnantian	443.8
		Katian								Pirgu		Rawtheyan	445.2
												Cautleyan	448.9 *
												Pusgillian	449.3 *
										Vormsi	Caradoc	Streffordian	Onnian †	449.6 *
										Nabala				Johvi †	450 *
									Viru	Rakvere					450.6 *
										Rakvere		Cheneyan			451.5 *
										Oandu		Cheneyan			452 *
										Oandu		Burrellian			452.7 *
		Sandbian								Keila				Idavere †	453
										Keila			Actonian †		453.2 *
										Haljala			Actonian †		453.9
													Marshbrookian †		Woolstonian †	454.2 *
													Longvillian †			455.2 *
										Kukruse						456.4 *
												Aurelucian				456.8 *
													Soudleyan †/Harnagian/Costonian			457.4 *
										Uhaku			Soudleyan †/Harnagian/Costonian	Aluoja †		457.5 *
	Middle Ordovician	Darriwilian								Uhaku	Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn				458.4
										Lasnamagi						458.9 *
										Aseri						460.4 *
										Aseri		Abereiddian/Early Llanvirn				461.3 *
									Oeland	Kunda						462.9 *
										Kunda				Valaste †/Hunderum		464.3 *
										Volkhov						Langevoja †/Vaana/Saka	467.1 *
		Dapingian															467.3
											Arenig	Fennian					468.4 *
				Billingen						469.3 *
	Early Ordovician	Floian								470
										Latorp †						470.1 *
												Whitlandian				471.1 *
				Hunneberg								Whitlandian				473.7 *
												Moridunian				474.3 *
		Tremadocian									Ungurian	Tremadoc				Migneintian	477.7
																Cressagian	480.8 *
				Varangu													481.3 *
				Pakerort	482.2 *
					Mansian †	483.55 *
					Mansian †											485 *
Cambrian	Furongian	Stage 10			Batyrbaian					Tavgian †	Ketyan †/Yurakian					Batyrbaian	Niuchehean	Taoyuanian †	485.4
				486.3 *
									486.5
		Jiangshanian							Jiangshanian								489.5
					Aksaian											Aksaian	490.7 *
					Sakian											Sakian	492.2 *
		Paibian							Paibian								494
											Ensyan †/Maduan/Nganasanian						494.7 *
											Ensyan †/Maduan/Nganasanian						Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian			Series 3 †				Ayusokkanian							Ayusokkanian	Guzhangian	Wangcunian †	497
		Guzhangian							Mayan/Menevian								Guzhangian		499.5
		Drumian														Zhanaarykian	Drumian		500.5
		Drumian														Tuesaian	Drumian		503
		Wuliuan							Stage 5 †							Tuesaian	Amgan/Solvan	Wuliuan/Taijangian		504.5
		Wuliuan							Stage 5 †									Wuliuan/Taijangian		505.3
	Series 2	Stage 4																Duyunian		509
							Toyonian	Lenian †		Toyonian						510 *
							Botomian			Botomian						512.5 *
		Stage 3					Botomian			Botomian						Nangaoian	514
		Stage 3					Atdabanian			Atdabanian						Nangaoian	515.6 *
	Terreneuvian	Stage 2					Tommotian			Tommotian						Meishucunian	521
		Stage 2					Nemakit-Daldynian										525.5
		Fortunian						Manykaian †									529
		Fortunian						Manykaian †								Jinnigian	530.7
																							538.8