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
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

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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cretaceous Subepochs	Ordovician of China			Cambrian of China		Silurian of the Baltic	European Faunal Zones
Quaternary	Pleistocene	Gelasian											MN 17	1.8
Neogene	Pliocene	Piacenzian	Tertiary †										MN 16	2.58
		Piacenzian											MN 15	3.2
		Zanclean											MN 15	3.6
													MN 14	4.2
													MN 13	4.9
	Miocene	Messinian											MN 13	5.333
		Tortonian											MN 12	7.246
													MN 11	7.75
													MN 10	8.7
													MN 9	9.7
													MN 7 + 8	11.1
		Serravallian											MN 7 + 8	11.63
		Serravallian											MN 6	12.8 *
		Langhian											MN 5	13.82
		Burdigalian											MN 4	15.98
													MN 3	16.9
													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				Senonian								66
		Campanian												72.1
		Santonian												83.6
		Coniacian												86.3
		Turonian												89.8
		Cenomanian												93.9
	Early Cretaceous	Albian				Gallic								100.5
		Aptian												113
		Barremian												121.4
		Hauterivian				Neocomian								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
		Gzhelian			Xiaodushanian		300 *
		Kasimovian			Xiaodushanian		303.7
		Kasimovian			Dalaun		305.8 *
		Moscovian					307
		Bashkirian					315.2
					Huashibanian		318.5 *
					Lousuan		321.2 *
	Mississippian	Serpukhovian			Dewunian		323.2
		Serpukhovian			Shangsian		330.8 *
		Visean			Shangsian		330.9
		Visean			Jiusian		335 *
		Tournaisian			Tangbagouan		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						Ohesaare	419.2
	Pridoli						Kaugetuma	421.7 *
	Ludlow	Ludfordian					Kuressaare	423
		Ludfordian					Paadla	423.4 *
		Gorstian					Paadla	425.6
	Wenlock	Homerian	Rootsikula				Gleedonian	427.4
			Jaagarahu				Gleedonian	429.2 *
							Whitwellian	429.7 *
		Sheinwoodian						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			445.2			Wufeng †
		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							Niuchehean	Taoyuanian †	485.4
		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