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
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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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

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			Carboniferous of China	Ammonite Chrons of North America			Silurian Ages of Europe	Devonian of Czechoslovakia	Cambrian of Australia	Paleogene Mammal Ages of Asia		Permian-Jurassic of New Zealand
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											Tabenbulakian	Hsandagolian			23.03
	Oligocene	Rupelian											Kekeamuan	Hsandagolian			27.82
	Eocene	Priabonian											Houldjinian/Ergilian/Ulangochuian				33.9
		Bartonian											Sharamurunian/Irdinmanhan/Arshantan				37.71
		Lutetian															41.2
		Ypresian												Bumbanian			47.8
	Paleocene	Thanetian											Gashatan				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
							Yakounensis/Hillebrandti/Crassicosta								Herangi	Ururoan	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 *
							Whiteavesi/Imlayi									Aratauran	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	251.902
		Changhsingian			Waiitian	253.2
		Wuchiapingian			Waiitian	Longtanian †				254.14
		Wuchiapingian			Puruhauan	Longtanian †				254.2
	Guadalupian	Capitanian			Aparima	Flettian				259.51
		Wordian				Flettian				264.28
		Wordian				Barettian				266
		Roadian								266.9
	Cisuralian	Kungurian								273.01
		Kungurian				Mangapirian				276
		Artinskian	283.5			Mangapirian
			Telfordian			285
						288.5
		Sakmarian				290.1
		Asselian				293.52
Carboniferous	Pennsylvanian	Gzhelian				298.9
		Gzhelian				Xiaodushanian				300 *
		Kasimovian				Xiaodushanian				303.7
		Kasimovian				Dalaun				305.8 *
		Moscovian								307
		Bashkirian								315.2
						Huashibanian				318.5 *
						Lousuan				321.2 *
	Mississippian	Serpukhovian				Dewunian				323.2
		Serpukhovian				Shangsian				330.8 *
		Visean				Shangsian				330.9
		Visean				Jiusian				335 *
		Tournaisian				Tangbagouan				346.7
Devonian	Late Devonian	Famennian								Famennian	358.9
	Late Devonian	Frasnian								Frasnian	372.2
	Middle Devonian	Givetian								Srbsko	Givetian	382.7
	Middle Devonian	Eifelian								Chotec	Couvinien	387.7
	Early Devonian	Emsian								Daleje/Zlichovian		393.3
		Pragian								Pragian		407.6
		Pragian								Pragian	Coblencien	408.2 *
		Lochkovian								Lochkovian	Gedinnine	410.8
Silurian	Pridoli											419.2
	Ludlow	Ludfordian										423
	Ludlow	Gorstian										425.6
	Wenlock	Homerian										Gleedonian	427.4
		Homerian										Whitwellian	429.7 *
		Sheinwoodian											430.5
	Llandovery	Telychian											433.4
		Aeronian											438.5
		Rhuddanian											440.8
Ordovician	Late Ordovician	Hirnantian											443.8
		Katian											445.2
		Sandbian											453
	Middle Ordovician	Darriwilian						458.4
	Middle Ordovician	Dapingian						467.3
	Early Ordovician	Floian					470
	Early Ordovician	Tremadocian					477.7
Cambrian	Furongian	Stage 10					Datsonian	485.4
		Stage 10					Payntonian	486.8 *
		Jiangshanian					Iverian	489.5
		Paibian					Idamean	494
	Miaolingian	Guzhangian					Series 3 †	Mindyallan	497
		Guzhangian						Boomerangian	499
		Drumian						Undillan	500.5
		Drumian						Floran	503
		Wuliuan		Stage 5 †				Templetonian	504.5
		Wuliuan		Stage 5 †				Ordian	507.8 *
	Series 2	Stage 4						Ordian	509
																	510.8 *