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. 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
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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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			Cambrian Epochs	European Faunal Units	Central Paratethys Stages	Ordovician of China		Permian of the Pamirs
Neogene	Pliocene	Piacenzian	Tertiary †				Villanyian					2.58
		Piacenzian					Ruscinian					3.1 *
		Zanclean					Ruscinian					3.6
	Miocene	Messinian					Turolian					5.333
		Tortonian					Turolian	Pannonian				7.246
		Tortonian					Vallesian	Pannonian				8.7
		Serravallian					Astaracian	Sarmatian				11.63
		Serravallian						Badenian				12.8 *
		Langhian										13.82
		Burdigalian					Orleanian					15.98
		Burdigalian					Agenian					20
		Aquitanian					Agenian					20.44
Paleogene	Oligocene	Chattian										23.03
	Oligocene	Rupelian										27.82
	Eocene	Priabonian										33.9
		Bartonian										37.71
		Lutetian										41.2
		Ypresian										47.8
	Paleocene	Thanetian										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									Dorashamian	251.902
	Lopingian	Wuchiapingian		Longtanian †							Dzhulfian	254.14
	Guadalupian	Capitanian									Midian	259.51
		Wordian									Midian	264.28
		Wordian									Murgabian	266.2 *
		Roadian									Murgabian	266.9
	Cisuralian	Kungurian									Kubergandian	273.01
		Kungurian									Bolorian	279.8
		Artinskian									Bolorian	283.5
		Artinskian									Yakhtashian	286
		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			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	Neichianshanian/Hanjiang				453
	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				Ungurian	477.7
		Tremadocian	Xinchangian			Lianghekou †	Ungurian	477.9 *
Cambrian	Furongian	Stage 10	Late Cambrian					Batyrbaian	485.4
		Jiangshanian						Batyrbaian	489.5
								Aksaian	490.7 *
								Sakian	492.2 *
		Paibian						Sakian	494
	Miaolingian	Guzhangian	Series 3 †					Middle Cambrian	Ayusokkanian	497
		Guzhangian								499.5
		Drumian							Zhanaarykian	500.5
		Drumian							Tuesaian	503
		Wuliuan		Stage 5 †					Tuesaian	504.5
		Wuliuan		Stage 5 †						505.3
	Series 2	Stage 4						Early Cambrian		509
									Toyonian	510 *
									Botomian	512.5 *
		Stage 3							Botomian	514
		Stage 3							Atdabanian	515.6 *
	Terreneuvian	Stage 2							Tommotian	521
		Stage 2								525.5
		Fortunian								529
												538.8