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
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
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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			Obsolete Carboniferous Ages of China	Central Paratethys Stages	Permo-Triassic Subages of Eastern Europe	Cambrian of Kazakhstan	Permian Subages of Germany	Cambrian of China
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											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						Vokhmian					247.2
	Early Triassic	Induan						Vokhmian					251.2
Permian	Lopingian	Changhsingian								Buntsandstein			251.902
	Lopingian	Wuchiapingian		Longtanian †				Late Vyatkian/Early Vyatkian		Buntsandstein			254.14
	Guadalupian	Capitanian						Late Severodvinian/Early Severodvinian		Ohre/Aller			259.51
		Wordian						Late Urzhumian/Early Urzhumian		Leine			264.28
		Roadian						Late Kazanian/Early Kazanian					266.9
	Cisuralian	Kungurian											273.01
		Artinskian											283.5
		Sakmarian											290.1
		Asselian											293.52
Carboniferous	Pennsylvanian	Gzhelian				Mapingian †							298.9
		Kasimovian				Mapingian †							303.7
		Kasimovian											305.9
		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			Gleedonian		427.4
		Homerian			Whitwellian		429.7 *
		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	Ungurian				477.7
Cambrian	Furongian	Stage 10	Batyrbaian				Niuchehean		Taoyuanian †		485.4
		Jiangshanian	Batyrbaian				Jiangshanian				489.5
			Aksaian								490.7 *
			Sakian								492.2 *
		Paibian					Paibian				494
		Paibian					Paibian		Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian	Series 3 †				Ayusokkanian		Guzhangian		Wangcunian †	497
		Guzhangian							Guzhangian			499.5
		Drumian					Zhanaarykian		Drumian			500.5
		Drumian					Tuesaian		Drumian			503
		Wuliuan		Stage 5 †			Tuesaian		Wuliuan/Taijangian			504.5
		Wuliuan		Stage 5 †					Wuliuan/Taijangian			505.3
	Series 2	Stage 4							Duyunian			509
							Toyonian					510 *
							Botomian					512.5 *
		Stage 3					Botomian		Nangaoian			514
		Stage 3					Atdabanian		Nangaoian			515.6 *
	Terreneuvian	Stage 2					Tommotian		Meishucunian			521
		Stage 2										525.5
		Fortunian										529
		Fortunian							Jinnigian			530.7
													538.8