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. 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. J. Prevosti, C. O. Romano, A. M. Forasiepi, S. Hemming, R. Bonini, A. M. Candela, E. Cerdeño, M. C. Madozzo Jaén, P. E. Ortiz, F. Pujos, L. Rasia, G. I. Schmidt, M. Taglioretti, R. D. E. MacPhee, and U. F. J. Pardiñas. 2021. New radiometric 40Ar–39Ar dates and faunistic analyses refine evolutionary dynamics of Neogene vertebrate assemblages in southern South America. Scientific Reports 2021(11):9830 view
J. J. Flynn and C. C. Swisher, III. 1995. Cenozoic South American Land Mammal Ages: correlation to global geochronology. Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication 54:317-333 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

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			Silurian Ages of Europe	Devonian of Germany	European Faunal Zones	South American Land Mammal Ages		Permian of Western Europe
Quaternary	Pleistocene	Late Pleistocene							Lujanian			0.0117
		Chibanian							Lujanian			0.129
		Chibanian							Ensenadan			0.3 *
		Calabrian							Ensenadan			0.774
		Calabrian							Sanandresian	Uquian †		1.7 *
		Gelasian						MN 17	Sanandresian			1.8
Neogene	Pliocene	Piacenzian	Tertiary †					MN 16	Vorohuean			2.58
								MN 16	Chapadmalalan			2.9 *
								MN 15				3.2
		Zanclean										3.6
									Montehermosan			3.7 *
								MN 14	Montehermosan			4.2
								MN 13	Huayquerian			4.9 *
	Miocene	Messinian						MN 13				5.333
		Tortonian						MN 12				7.246
								MN 11				7.75
								MN 11	Chasicoan			7.9 *
								MN 10				8.7
								MN 9				9.7
									Mayoan			9.9 *
									Laventan			10.9 *
								MN 7 + 8				11.1
		Serravallian						MN 7 + 8				11.63
								MN 6				12.8 *
								MN 6	Colloncuran			13.7 *
		Langhian						MN 5	Colloncuran			13.82
		Langhian						MN 5	Friasian			15.4 *
		Burdigalian						MN 4	Friasian			15.98
								MN 4	Santacrucian			16.2 *
								MN 3	Santacrucian			16.9
								MN 3	Colhuehuapian			17.4 *
								MN 2				20
		Aquitanian										20.44
									Deseadan			20.9 *
								MN 1				22.4
Paleogene	Oligocene	Chattian										23.03
		Rupelian										27.82
		Rupelian							Tinguirirican			28.9 *
	Eocene	Priabonian							Tinguirirican			33.9
		Priabonian							Divisaderan			35.9 *
		Bartonian										37.71
		Lutetian										41.2
		Lutetian							Mustersan			41.9 *
		Ypresian							Mustersan			47.8
		Ypresian							Casamayoran			47.9 *
	Paleocene	Thanetian							Riochican			56
									Itaboraian			56.9 *
									Peligran			58.9 *
		Selandian										59.2
		Danian										61.6
		Danian							Tiupampan			62.4 *
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 †	Zechstein	254.14
	Guadalupian	Capitanian			Rotliegendes	259.51
		Wordian				264.28
		Roadian				266.9
	Cisuralian	Kungurian				273.01
		Artinskian			Autunian	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				Wocklum/Dasberg/Hemberg/Nehden	Late Famennian			358.9
							Middle Famennian			365.3 *
							Early Famennian	368.5 *
		Frasnian				Adorf	Late Frasnian	372.2
							Middle Frasnian	375.4 *
							Early Frasnian	379.3 *
	Middle Devonian	Givetian				Givetian	Late Givetian	382.7
							Middle Givetian	383.7 *
							Early Givetian	385.9 *
		Eifelian				Eifelian	Late Eifelian	387.7
		Eifelian				Eifelian	Early Eifelian	390.3 *
	Early Devonian	Emsian				Emsian	Late Emsian	393.3
		Emsian				Emsian	Early Emsian	398.3 *
		Pragian				Siegen	Pragian	407.6
		Lochkovian				Gedinnine	Late Lochkovian	410.8
							Middle Lochkovian	412.8 *
							Early Lochkovian	415.6 *
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						Franconian †/Dresbachian/Millardan	485.4
		Stage 10							Sunwaptan	487.5
		Jiangshanian							Sunwaptan	489.5
		Jiangshanian							Steptoean	493 *
		Paibian							Steptoean	494
	Miaolingian	Guzhangian						Series 3 †	Marjumian	Albertian †	497
		Drumian							Marjumian		500.5
		Wuliuan		Stage 5 †					Topazan		504.5
		Wuliuan		Stage 5 †					Delamaran		506.5
	Series 2	Stage 4							Delamaran	Waucoban †	509
		Stage 4							Dyeran		511 *
		Stage 3							Dyeran		514
									Montezuman		514.8 *
									Begadean		519.9 *
	Terreneuvian	Stage 2									521
	Terreneuvian	Fortunian									529
												538.8