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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view
M. Freudenthal. 2006. Mammal Paleogene zones. personal communication 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 Subepochs	Cambrian of Siberia			Permian Subages of Germany			Central Paratethys Stages	Mammal Paleogene Zones
Neogene	Pliocene	Piacenzian	Tertiary †												2.58
	Pliocene	Zanclean													3.6
	Miocene	Messinian													5.333
		Tortonian										Pannonian			7.246
		Serravallian										Sarmatian			11.63
		Serravallian										Badenian			12.8 *
		Langhian													13.82
		Burdigalian													15.98
		Aquitanian													20.44
Paleogene	Oligocene	Chattian											MP 30/MP 29/MP 28/MP 27/MP 26	MP 25	23.03
	Oligocene	Rupelian											MP 24/MP 23/MP 22/MP 21	MP 25	27.82
	Eocene	Priabonian											MP 20/MP 19/MP 18/MP 17B/MP 17A		33.9
		Bartonian											MP 16		37.71
		Lutetian											MP 15/MP 14/MP 13/MP 12/MP 11		41.2
		Ypresian											MP 10/MP 8 + 9/MP 7		47.8
	Paleocene	Thanetian											MP 6	MP 1 - 5	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							Buntsandstein						251.902
	Lopingian	Wuchiapingian		Longtanian †					Buntsandstein						254.14
	Guadalupian	Capitanian							Ohre/Aller						259.51
		Wordian							Leine						264.28
		Roadian													266.9
	Cisuralian	Kungurian													273.01
		Artinskian													283.5
		Sakmarian													290.1
		Asselian													293.52
Carboniferous	Pennsylvanian	Gzhelian			Late Pennsylvanian										298.9
		Kasimovian			Late Pennsylvanian										303.7
		Moscovian			Middle Pennsylvanian										307
		Bashkirian			Early Pennsylvanian										315.2
	Mississippian	Serpukhovian			Late Mississippian										323.2
		Visean			Middle Mississippian										330.9
		Tournaisian			Early Mississippian										346.7
Devonian	Late Devonian	Famennian			358.9
	Late Devonian	Frasnian			372.2
	Middle Devonian	Givetian			382.7
	Middle Devonian	Eifelian			387.7
	Early Devonian	Emsian			393.3
		Pragian			407.6
		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			Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian			Chientangkiangian		Wufeng †	445.2
		Katian			Neichianshanian/Hanjiang			449.5
		Sandbian	453		Neichianshanian/Hanjiang
	Middle Ordovician	Darriwilian	Darriwilian		Guniu †/Hulo	458.4
		Darriwilian	Darriwilian		Hunjiang †	Dawan †/Daobaowan/Ningkuo	466.3 *
		Dapingian	Dapingian				467.3
	Early Ordovician	Floian	Yiyangian				470
		Tremadocian	Xinchangian				477.7
						Lianghekou †	477.9 *
						Lianghekou †	Mansian †	483.55 *
Cambrian	Furongian	Stage 10	Batyrbaian		Tavgian †	Ketyan †/Yurakian				485.4
		Jiangshanian	Batyrbaian							489.5
			Aksaian							490.7 *
			Sakian							492.2 *
		Paibian								494
		Paibian				Ensyan †/Maduan/Nganasanian				494.7 *
	Miaolingian	Guzhangian	Series 3 †		Ayusokkanian						497
		Guzhangian			Mayan/Menevian						499.5
		Drumian			Mayan/Menevian						500.5
		Wuliuan		Stage 5 †	Amgan/Solvan						504.5
	Series 2	Stage 4			Amgan/Solvan						509
					Toyonian	Lenian †					510 *
					Botomian						512.5 *
		Stage 3			Botomian						514
		Stage 3			Atdabanian						515.6 *
	Terreneuvian	Stage 2			Tommotian						521
		Stage 2			Nemakit-Daldynian						525.5
		Fortunian			Nemakit-Daldynian	Manykaian †					529
															538.8