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
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

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			Ordovician of Britain				Obsolete Carboniferous Ages of China	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			Mapingian †		298.9
		Kasimovian			Mapingian †		303.7
		Kasimovian					305.9
		Moscovian					307
		Bashkirian					315.2
	Mississippian	Serpukhovian					323.2
		Visean					330.9
		Tournaisian					346.7
Devonian	Late Devonian	Famennian					Late Famennian	358.9
							Middle Famennian	365.3 *
							Early Famennian	368.5 *
		Frasnian					Late Frasnian	372.2
							Middle Frasnian	375.4 *
							Early Frasnian	379.3 *
	Middle Devonian	Givetian					Late Givetian	382.7
							Middle Givetian	383.7 *
							Early Givetian	385.9 *
		Eifelian					Late Eifelian	387.7
		Eifelian					Early Eifelian	390.3 *
	Early Devonian	Emsian					Late Emsian	393.3
		Emsian					Early Emsian	398.3 *
		Pragian					Pragian	407.6
		Lochkovian					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					Ashgill	Hirnantian	443.8
		Katian						Rawtheyan	445.2
								Cautleyan	448.9 *
								Pusgillian	449.3 *
							Caradoc	Streffordian	Onnian †	449.6 *
								Cheneyan		451.5 *
								Burrellian		452.7 *
		Sandbian								453
									Actonian †	453.2 *
									Marshbrookian †	Woolstonian †	454.2 *
									Longvillian †		455.2 *
								Aurelucian	Longvillian †		456.8 *
								Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian					Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian						Abereiddian/Early Llanvirn			461.3 *
		Dapingian						Abereiddian/Early Llanvirn			467.3
		Dapingian					Arenig	Fennian			468.4 *
	Early Ordovician	Floian						Fennian			470
								Whitlandian			471.1 *
								Moridunian			474.3 *
		Tremadocian					Tremadoc	Migneintian			477.7
							Tremadoc	Cressagian			480.8 *
											485 *
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				Delamaran					Stage 5 †		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