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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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

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-Jurassic of New Zealand		Cambrian of China		Cambrian of Kazakhstan	Devonian of Czechoslovakia	Paleogene Mammal Ages of Asia		Cambrian Epochs	Ordovician of Ibero-Bohemia
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																			168.2
		Aalenian																			170.9
	Early Jurassic	Toarcian																			174.7
		Toarcian				Herangi	Ururoan														176
		Pliensbachian					Ururoan														184.2
		Pliensbachian					Aratauran														188.9
		Sinemurian																			192.9
		Hettangian																			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		Longtanian †			Waiitian														254.14
		Wuchiapingian		Longtanian †			Puruhauan														254.2
	Guadalupian	Capitanian				Aparima	Flettian														259.51
		Wordian			264.28		Flettian
		Wordian			Barettian		266
		Roadian					266.9
	Cisuralian	Kungurian					273.01
		Kungurian			Mangapirian		276
		Artinskian			Mangapirian		283.5
					Telfordian		285
							288.5
		Sakmarian					290.1
		Asselian					293.52
Carboniferous	Pennsylvanian	Gzhelian					Mapingian †	298.9
		Kasimovian					Mapingian †	303.7
		Kasimovian						305.9
		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	Srbsko					382.7
	Middle Devonian	Eifelian	Chotec					387.7
	Early Devonian	Emsian	Daleje/Zlichovian					393.3
		Pragian	Pragian					407.6
		Lochkovian	Lochkovian					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						Kosovian	Cincinnatian	Gamachian	443.8
		Katian						Kralodvorian		Gamachian	Bohdalec †	445.2
								Kralodvorian		Richmondian		446 *
								Berounian		Richmondian		449.7 *
										Maysvillian		Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
										Edenian			450.4 *
									Mohawkian	Chatfieldian			451.1 *
		Sandbian								Chatfieldian			453
										Turinian			453.7 *
										Turinian			Zahorany †/Vinice	Letna †	456.2 *
									Whiterockian			Canadian †	Zahorany †/Vinice		Chazyan †/Marmor	457 *
											Liben †					458 *
	Middle Ordovician	Darriwilian														458.4
								Dobrotivian								458.5 *
								Oretanian								459.7 *
											Sarka †					461.7 *
		Dapingian									Klabava †					467.3
								Arenigian								468
										Rangerian						469.1 *
	Early Ordovician	Floian							Ibexian	Blackhillsian					Jeffersonian †	Cassinian †	470
		Floian								Tulean							473.9 *
		Tremadocian						Ungurian		Tulean	Tremadocian							477.7
										Stairsian								480.3 *
										Skullrockian						Demingian †		482 *
Cambrian	Furongian	Stage 10						Niuchehean		Skullrockian	Taoyuanian †	Batyrbaian			Late Cambrian				485.4
		Stage 10						Niuchehean											487.5
		Jiangshanian						Jiangshanian											489.5
												Aksaian							490.7 *
												Sakian							492.2 *
		Paibian						Paibian											494
		Paibian		Waergangian †/Youshuanian				Paibian			494.9 *
	Miaolingian	Guzhangian		Series 3 †				Guzhangian			Wangcunian †	Ayusokkanian			Middle Cambrian				497
		Guzhangian						Guzhangian											499.5
		Drumian						Drumian				Zhanaarykian							500.5
		Drumian						Drumian				Tuesaian							503
		Wuliuan						Stage 5 †			Wuliuan/Taijangian	Tuesaian								504.5
		Wuliuan						Stage 5 †			Wuliuan/Taijangian									505.3
	Series 2	Stage 4									Duyunian				Early Cambrian					509
					Toyonian	510 *
					Botomian	512.5 *
		Stage 3			Botomian	Nangaoian					514
		Stage 3			Atdabanian	Nangaoian					515.6 *
	Terreneuvian	Stage 2			Meishucunian	Tommotian					521
		Stage 2					525.5
		Fortunian					529
		Fortunian			Jinnigian		530.7
																					538.8