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, 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
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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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			Ordovician of Britain				Devonian Subages	Permian of the Pamirs	Ordovician of China			Central Paratethys Stages	Permian Subages of Germany
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															247.2
	Early Triassic	Induan															251.2
Permian	Lopingian	Changhsingian									Dorashamian					Buntsandstein	251.902
	Lopingian	Wuchiapingian		Longtanian †							Dzhulfian					Buntsandstein	254.14
	Guadalupian	Capitanian									Midian					Ohre/Aller	259.51
		Wordian									Midian					Leine	264.28
		Wordian									Murgabian					Leine	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			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			Ashgill	Hirnantian	Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian				Rawtheyan	Chientangkiangian			445.2
						Cautleyan				448.9 *
						Pusgillian				449.3 *
						Pusgillian	Neichianshanian/Hanjiang			449.5
					Caradoc	Streffordian				Onnian †		449.6 *
						Cheneyan						451.5 *
						Burrellian						452.7 *
		Sandbian										453
										Actonian †		453.2 *
										Marshbrookian †		Woolstonian †	454.2 *
										Longvillian †			455.2 *
						Aurelucian				Longvillian †			456.8 *
						Aurelucian				Soudleyan †/Harnagian/Costonian			457.4 *
	Middle Ordovician	Darriwilian			Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn		Darriwilian		Guniu †/Hulo			458.4
						Abereiddian/Early Llanvirn				Guniu †/Hulo			461.3 *
									Hunjiang †	Dawan †/Daobaowan/Ningkuo			466.3 *
		Dapingian						Dapingian					467.3
		Dapingian			Arenig	Fennian		Dapingian					468.4 *
	Early Ordovician	Floian				Fennian		Yiyangian					470
						Whitlandian							471.1 *
						Moridunian							474.3 *
		Tremadocian		Tremadoc	Migneintian	Xinchangian		477.7
					Migneintian			Lianghekou †		477.9 *
					Cressagian					480.8 *
					Cressagian					Mansian †			483.55 *
										Mansian †			485 *
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