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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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 North America						Permian Subages of Germany	Cambrian of China
Neogene	Pliocene	Piacenzian	Tertiary †												2.58
	Pliocene	Zanclean													3.6
	Miocene	Messinian													5.333
		Tortonian													7.246
		Serravallian													11.63
		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										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													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			Gleedonian	427.4
		Homerian			Whitwellian	429.7 *
		Sheinwoodian				430.5
	Llandovery	Telychian				433.4
		Aeronian				438.5
		Rhuddanian				440.8
Ordovician	Late Ordovician	Hirnantian				Cincinnatian	Gamachian	443.8
		Katian					Gamachian	445.2
			Richmondian				446 *
			Maysvillian				Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
			Edenian					450.4 *
			Mohawkian			Chatfieldian		451.1 *
		Sandbian				Chatfieldian		453
						Turinian		453.7 *
			Whiterockian				Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian							458.4
		Dapingian							467.3
		Dapingian				Rangerian			469.1 *
	Early Ordovician	Floian	Ibexian			Blackhillsian		Jeffersonian †	Cassinian †	470
		Floian				Tulean				473.9 *
		Tremadocian				Tulean				477.7
						Stairsian				480.3 *
						Skullrockian			Demingian †	482 *
Cambrian	Furongian	Stage 10				Skullrockian				Niuchehean	Taoyuanian †		485.4
		Stage 10								Niuchehean			487.5
		Jiangshanian								Jiangshanian			489.5
		Paibian								Paibian			494
		Paibian								Paibian	Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian								Series 3 †	Guzhangian		Wangcunian †	497
		Drumian									Drumian		Wangcunian †	500.5
		Wuliuan		Stage 5 †							Wuliuan/Taijangian			504.5
	Series 2	Stage 4									Duyunian			509
	Series 2	Stage 3									Nangaoian			514
	Terreneuvian	Stage 2									Meishucunian			521
		Fortunian									Meishucunian			529
		Fortunian									Jinnigian			530.7
															538.8