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. 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

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			South American Land Mammal Ages		Permian of the Salt Range	Cambrian of Britain
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				Sanandresian				1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Vorohuean				2.58
		Piacenzian				Chapadmalalan				2.9 *
		Zanclean				Chapadmalalan				3.6
						Montehermosan				3.7 *
						Huayquerian				4.9 *
	Miocene	Messinian								5.333
		Tortonian								7.246
						Chasicoan				7.9 *
						Mayoan				9.9 *
						Laventan				10.9 *
		Serravallian				Laventan				11.63
		Serravallian				Colloncuran				13.7 *
		Langhian				Colloncuran				13.82
		Langhian				Friasian				15.4 *
		Burdigalian				Friasian				15.98
						Santacrucian				16.2 *
						Colhuehuapian				17.4 *
		Aquitanian				Colhuehuapian				20.44
		Aquitanian				Deseadan				20.9 *
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
		Induan		251.2
		Induan		Kathwai	251.5 *
Permian	Lopingian	Changhsingian		Kathwai	251.902
					252.4 *
				Chhidru	252.9 *
		Wuchiapingian		Chhidru	Longtanian †		254.14
				Kalabagh			255 *
				Wargal			256 *
	Guadalupian	Capitanian					259.51
		Wordian					264.28
							265.3 *
				Amb			266.1 *
		Roadian		Amb			266.9
		Roadian					270.7 *
	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					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				Merioneth	Dolgellian/Trempealeauan	485.4
		Stage 10					Festiniogian	489.2 *
		Jiangshanian					Festiniogian	489.5
		Jiangshanian					Maentwrogian	493.1 *
		Paibian					Maentwrogian	494
	Miaolingian	Guzhangian				Series 3 †	St Davids		497
		Drumian							500.5
		Wuliuan			Stage 5 †				504.5
	Series 2	Stage 4					Caerfai		509
	Series 2	Stage 3							514
	Terreneuvian	Stage 2							521
	Terreneuvian	Fortunian							529
										538.8