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			Permian of the Russian Platform		Cambrian of Siberia			Cambrian of Kazakhstan	Devonian of France	Cambrian of China		Permian of China	Permian-Jurassic of New Zealand				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			254.2
								Tatarian	Vyatkian	256.8 *
							Laibinian		Vyatkian	257.7 *
	Guadalupian	Capitanian			Severodvinian	Lengwuan	Aparima		Flettian	259.51
		Wordian			Urzhumian	Kuhfengian			Flettian	264.28
		Wordian			Urzhumian				Barettian	266
		Roadian	Kazanian		Povolzhian			266.9
		Roadian	Kazanian		Sokian			270.7 *
	Cisuralian	Kungurian	Kungurian		Irenian/Ufimian	Luodianian		273.01
					Irenian/Ufimian			Mangapirian	276
					Filipovian				276.5 *
					Saraninian				280.1 *
		Artinskian	Artinskian		Sarginian				283.5
								Telfordian	285
						Longlinian			285.4 *
					Irginian				285.9 *
					Burtsevian				287.8 *
					Burtsevian				288.5
		Sakmarian	Sakmarian		Sterlitamakian				290.1
		Sakmarian	Sakmarian		Tastubian				291.7 *
		Asselian	Asselian		Shikhanian	Zisongian			293.52
					Uskalykian				294.8
					Surenian				297.5
Carboniferous	Pennsylvanian	Gzhelian							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							Famennian	358.9
	Late Devonian	Frasnian							Frasnian	372.2
	Middle Devonian	Givetian							Givetian	382.7
	Middle Devonian	Eifelian							Couvinien	387.7
	Early Devonian	Emsian								393.3
		Pragian								407.6
		Pragian							Coblencien	408.2 *
		Lochkovian							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