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. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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

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			European Faunal Units	Cambrian of North America		Paleogene Mammal Ages of Asia		Devonian of Czechoslovakia	Cambrian of China
Quaternary	Holocene	Meghalayan												0
		Northgrippian												0.0042
		Greenlandian												0.0082
	Pleistocene	Late Pleistocene												0.0117
		Chibanian												0.129
		Calabrian												0.774
		Gelasian												1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Villanyian								2.58
		Piacenzian				Ruscinian								3.1 *
		Zanclean				Ruscinian								3.6
	Miocene	Messinian				Turolian								5.333
		Tortonian				Turolian								7.246
		Tortonian				Vallesian								8.7
		Serravallian				Astaracian								11.63
		Langhian				Astaracian								13.82
		Burdigalian				Orleanian								15.98
		Burdigalian				Agenian								20
		Aquitanian				Agenian								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												145
		Kimmeridgian												149.2
		Oxfordian												154.8
	Middle Jurassic	Callovian												161.5
		Bathonian												165.3
		Bajocian												168.2
		Aalenian												170.9
	Early Jurassic	Toarcian												174.7
		Pliensbachian												184.2
		Sinemurian												192.9
		Hettangian												199.5
Triassic	Late Triassic	Rhaetian												201.4
		Norian												208.5
		Carnian												227
	Middle Triassic	Ladinian												237
	Middle Triassic	Anisian												242
	Early Triassic	Olenekian												247.2
	Early Triassic	Induan												251.2
Permian	Lopingian	Changhsingian												251.902
	Lopingian	Wuchiapingian		Longtanian †										254.14
	Guadalupian	Capitanian												259.51
		Wordian												264.28
		Roadian												266.9
	Cisuralian	Kungurian												273.01
		Artinskian												283.5
		Sakmarian			290.1
		Asselian			Bursumian †		293.52
Carboniferous	Pennsylvanian	Gzhelian			Virgilian		298.9
		Kasimovian			Missourian		303.7
		Kasimovian			Desmoinesian		305.9 *
		Moscovian			Desmoinesian		307
		Moscovian			Atokan		312.7 *
		Bashkirian			Atokan		315.2
		Bashkirian			Morrowan		318.4 *
	Mississippian	Serpukhovian			Chesterian		323.2
		Visean			Chesterian		330.9
					Meramecian		335.8 *
					Osagean		343.1 *
		Tournaisian			Osagean		346.7
		Tournaisian			Kinderhookian		351.9 *
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						Ohesaare	419.2
	Pridoli						Kaugetuma	421.7 *
	Ludlow	Ludfordian					Kuressaare	423
		Ludfordian					Paadla	423.4 *
		Gorstian					Paadla	425.6
	Wenlock	Homerian	Rootsikula				427.4
		Homerian	Jaagarahu				429.2 *
		Sheinwoodian	Jaagarahu				430.5
		Sheinwoodian	Jaani				431.8 *
	Llandovery	Telychian	Jaani				433.4
		Telychian	Adavere				434 *
		Aeronian	Adavere				438.5
		Aeronian	Raikkula				439.4 *
		Rhuddanian	Raikkula				440.8
		Rhuddanian	Juuru				441.4 *
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	Niuchehean	Taoyuanian †	Datsonian	485.4
										Payntonian	486.8 *
										Payntonian	Sunwaptan	487.5
		Jiangshanian						Jiangshanian		Iverian	Sunwaptan	489.5
		Jiangshanian						Jiangshanian		Iverian	Steptoean	493 *
		Paibian						Paibian		Idamean		494
		Paibian						Paibian	Waergangian †/Youshuanian	Idamean		494.9 *
	Miaolingian	Guzhangian					Series 3 †	Marjumian	Albertian †	Guzhangian	Wangcunian †	Mindyallan	497
		Guzhangian								Guzhangian		Boomerangian	499
		Drumian								Drumian		Undillan	500.5
		Drumian								Drumian		Floran	503
		Wuliuan		Stage 5 †				Topazan		Wuliuan/Taijangian		Templetonian	504.5
								Delamaran				Templetonian	506.5
												Ordian	507.8 *
	Series 2	Stage 4							Waucoban †	Duyunian		Ordian	509
													510.8 *
								Dyeran					511 *
		Stage 3						Dyeran		Nangaoian			514
								Montezuman					514.8 *
								Begadean					519.9 *
	Terreneuvian	Stage 2								Meishucunian			521
		Fortunian								Meishucunian			529
		Fortunian								Jinnigian			530.7
														538.8