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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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

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 of North America		Cambrian of China		Cambrian of Siberia			European Faunal Units	European Faunal Zones
Quaternary	Pleistocene	Gelasian												MN 17	1.8
Neogene	Pliocene	Piacenzian	Tertiary †										Villanyian	MN 16	2.58
													Ruscinian	MN 16	3.1 *
														MN 15	3.2
		Zanclean												MN 15	3.6
														MN 14	4.2
														MN 13	4.9
	Miocene	Messinian											Turolian	MN 13	5.333
		Tortonian												MN 12	7.246
														MN 11	7.75
													Vallesian	MN 10	8.7
														MN 9	9.7
														MN 7 + 8	11.1
		Serravallian											Astaracian	MN 7 + 8	11.63
		Serravallian												MN 6	12.8 *
		Langhian												MN 5	13.82
		Burdigalian											Orleanian	MN 4	15.98
													Orleanian	MN 3	16.9
													Agenian	MN 2	20
		Aquitanian												MN 2	20.44
		Aquitanian												MN 1	22.4
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													251.902
	Lopingian	Wuchiapingian		Longtanian †											254.14
	Guadalupian	Capitanian													259.51
		Wordian													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			427.4
	Wenlock	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
		Tremadocian	477.7
		Tremadocian	Mansian †		483.55 *
Cambrian	Furongian	Stage 10	Franconian †/Dresbachian/Millardan		Niuchehean	Taoyuanian †	Batyrbaian	Tavgian †	Ketyan †/Yurakian	Late Cambrian	485.4
		Stage 10			Niuchehean						Sunwaptan	487.5
		Jiangshanian			Jiangshanian							489.5
							Aksaian					490.7 *
							Sakian					492.2 *
											Steptoean	493 *
		Paibian			Paibian							494
									Ensyan †/Maduan/Nganasanian			494.7 *
						Waergangian †/Youshuanian			Ensyan †/Maduan/Nganasanian			494.9 *
	Miaolingian	Guzhangian	Series 3 †		Marjumian	Albertian †	Guzhangian	Wangcunian †	Ayusokkanian			Middle Cambrian	497
		Guzhangian					Guzhangian		Mayan/Menevian				499.5
		Drumian					Drumian		Mayan/Menevian				500.5
		Wuliuan		Stage 5 †	Topazan		Wuliuan/Taijangian		Amgan/Solvan				504.5
		Wuliuan		Stage 5 †	Delamaran		Wuliuan/Taijangian						506.5
	Series 2	Stage 4				Waucoban †	Duyunian					Early Cambrian	509
									Toyonian	Lenian †			510 *
					Dyeran				Toyonian				511 *
									Botomian				512.5 *
		Stage 3					Nangaoian						514
					Montezuman								514.8 *
					Montezuman				Atdabanian				515.6 *
					Begadean				Atdabanian				519.9 *
	Terreneuvian	Stage 2					Meishucunian		Tommotian				521
		Stage 2							Nemakit-Daldynian				525.5
		Fortunian								Manykaian †			529
		Fortunian					Jinnigian			Manykaian †			530.7
															538.8