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. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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			Cretaceous Subepochs	Carboniferous Subepochs	Cambrian of China		Cambrian of North America		Carboniferous of North America	Cambrian of Australia	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			Bursumian †		293.52
Carboniferous	Pennsylvanian	Gzhelian			Late Pennsylvanian		Virgilian	298.9
		Kasimovian					Missourian	303.7
		Kasimovian					Desmoinesian	305.9 *
		Moscovian			Middle Pennsylvanian		Desmoinesian	307
		Moscovian			Middle Pennsylvanian		Atokan	312.7 *
		Bashkirian			Early Pennsylvanian		Atokan	315.2
		Bashkirian			Early Pennsylvanian		Morrowan	318.4 *
	Mississippian	Serpukhovian			Late Mississippian		Chesterian	323.2
		Visean			Middle Mississippian		Chesterian	330.9
							Meramecian	335.8 *
							Osagean	343.1 *
		Tournaisian			Early Mississippian		Osagean	346.7
		Tournaisian			Early Mississippian		Kinderhookian	351.9 *
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						443.8
		Katian						445.2
		Sandbian						453
	Middle Ordovician	Darriwilian						458.4
	Middle Ordovician	Dapingian						467.3
	Early Ordovician	Floian						470
	Early Ordovician	Tremadocian						477.7
Cambrian	Furongian	Stage 10						Niuchehean	Taoyuanian †	Franconian †/Dresbachian/Millardan	Datsonian	485.4
						Payntonian					486.8 *
						Payntonian					Sunwaptan	487.5
		Jiangshanian				Jiangshanian		Iverian			Sunwaptan	489.5
		Jiangshanian				Jiangshanian		Iverian			Steptoean	493 *
		Paibian				Paibian		Idamean				494
		Paibian				Paibian		Idamean	Waergangian †/Youshuanian			494.9 *
	Miaolingian	Guzhangian				Series 3 †		Guzhangian	Wangcunian †	Marjumian	Albertian †	Mindyallan	497
		Guzhangian						Guzhangian				Boomerangian	499
		Drumian						Drumian				Undillan	500.5
		Drumian						Drumian				Floran	503
		Wuliuan		Stage 5 †				Wuliuan/Taijangian		Topazan		Templetonian	504.5
										Delamaran		Templetonian	506.5
												Ordian	507.8 *
	Series 2	Stage 4						Duyunian			Waucoban †	Ordian	509
													510.8 *
										Dyeran			511 *
		Stage 3						Nangaoian		Dyeran			514
										Montezuman			514.8 *
										Begadean			519.9 *
	Terreneuvian	Stage 2						Meishucunian					521
		Fortunian						Meishucunian					529
		Fortunian						Jinnigian					530.7
															538.8