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

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units			European Faunal Zones	Devonian of Germany	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	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
	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