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. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Paleogene Mammal Ages of Asia		Permian of the Pamirs	Permian-Jurassic of New Zealand		Cambrian 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				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						Dorashamian		Makarewan		251.902
		Changhsingian						Dorashamian		Waiitian		253.2
		Wuchiapingian		Longtanian †				Dzhulfian		Waiitian		254.14
		Wuchiapingian		Longtanian †				Dzhulfian		Puruhauan		254.2
	Guadalupian	Capitanian						Midian	Aparima	Flettian		259.51
		Wordian			264.28					Flettian
					Barettian					266
								Murgabian		266.2 *
		Roadian						Murgabian		266.9
	Cisuralian	Kungurian						Kubergandian		273.01
					Mangapirian			Kubergandian		276
								Bolorian		279.8
		Artinskian								283.5
					Telfordian					285
					Telfordian			Yakhtashian		286
								Yakhtashian		288.5
		Sakmarian						Sakmarian		290.1
		Asselian						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	Late Famennian			358.9
			Middle Famennian			365.3 *
			Early Famennian			368.5 *
		Frasnian	Late Frasnian			372.2
			Middle Frasnian			375.4 *
			Early Frasnian			379.3 *
	Middle Devonian	Givetian	Late Givetian			382.7
			Middle Givetian			383.7 *
			Early Givetian			385.9 *
		Eifelian	Late Eifelian			387.7
		Eifelian	Early Eifelian			390.3 *
	Early Devonian	Emsian	Late Emsian			393.3
		Emsian	Early Emsian			398.3 *
		Pragian	Pragian			407.6
		Lochkovian	Late Lochkovian			410.8
			Middle Lochkovian			412.8 *
			Early Lochkovian			415.6 *
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				Franconian †/Dresbachian/Millardan	485.4
		Stage 10					Sunwaptan			487.5
		Jiangshanian					Sunwaptan			489.5
		Jiangshanian					Steptoean			493 *
		Paibian					Steptoean			494
	Miaolingian	Guzhangian				Series 3 †	Marjumian			Albertian †	497
		Drumian					Marjumian				500.5
		Wuliuan		Stage 5 †			Topazan				504.5
		Wuliuan		Stage 5 †			Delamaran				506.5
	Series 2	Stage 4					Delamaran			Waucoban †	509
		Stage 4					Dyeran				511 *
		Stage 3					Dyeran				514
							Montezuman				514.8 *
							Begadean				519.9 *
	Terreneuvian	Stage 2									521
	Terreneuvian	Fortunian									529
												538.8