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
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	Devonian of France	Cambrian of China			Silurian of the Baltic
Neogene	Pliocene	Piacenzian	Tertiary †				Villanyian						2.58
		Piacenzian					Ruscinian						3.1 *
		Zanclean					Ruscinian						3.6
	Miocene	Messinian					Turolian						5.333
		Tortonian					Turolian						7.246
		Tortonian					Vallesian						8.7
		Serravallian					Astaracian						11.63
		Langhian					Astaracian						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											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			Famennian	358.9
	Late Devonian	Frasnian			Frasnian	372.2
	Middle Devonian	Givetian			Givetian	382.7
	Middle Devonian	Eifelian			Couvinien	387.7
	Early Devonian	Emsian				393.3
		Pragian				407.6
		Pragian			Coblencien	408.2 *
		Lochkovian			Gedinnine	410.8
Silurian	Pridoli					Ohesaare		419.2
	Pridoli					Kaugetuma	421.7 *
	Ludlow	Ludfordian				Kuressaare	423
		Ludfordian				Paadla	423.4 *
		Gorstian				Paadla	425.6
	Wenlock	Homerian				Rootsikula	427.4
		Homerian				Jaagarahu	429.2 *
		Sheinwoodian				Jaagarahu	430.5
		Sheinwoodian				Jaani	431.8 *
	Llandovery	Telychian				Jaani	433.4
		Telychian	Adavere			434 *
		Aeronian	Adavere			438.5
		Aeronian	Raikkula			439.4 *
		Rhuddanian	Raikkula			440.8
		Rhuddanian	Juuru			441.4 *
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						477.7
		Tremadocian	Xinchangian				Lianghekou †		477.9 *
Cambrian	Furongian	Stage 10	Late Cambrian			Niuchehean	Taoyuanian †			Datsonian	485.4
		Stage 10				Niuchehean				Payntonian	486.8 *
		Jiangshanian				Jiangshanian				Iverian	489.5
		Paibian				Paibian				Idamean	494
		Paibian				Paibian	Waergangian †/Youshuanian			Idamean	494.9 *
	Miaolingian	Guzhangian	Series 3 †			Middle Cambrian	Guzhangian			Wangcunian †	Mindyallan	497
		Guzhangian					Guzhangian				Boomerangian	499
		Drumian					Drumian				Undillan	500.5
		Drumian					Drumian				Floran	503
		Wuliuan		Stage 5 †			Wuliuan/Taijangian				Templetonian	504.5
		Wuliuan		Stage 5 †			Wuliuan/Taijangian				Ordian	507.8 *
	Series 2	Stage 4				Early Cambrian	Duyunian				Ordian	509
		Stage 4					Duyunian					510.8 *
		Stage 3					Nangaoian					514
	Terreneuvian	Stage 2					Meishucunian					521
		Fortunian					Meishucunian					529
		Fortunian					Jinnigian					530.7
													538.8