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. 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			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										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					298.9
		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	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						427.4
	Wenlock	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 *