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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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			Paleogene Mammal Ages of Asia		South American Land Mammal Ages
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				Tabenbulakian	Hsandagolian			23.03
		Rupelian				Kekeamuan				27.82
		Rupelian				Kekeamuan		Tinguirirican		28.9 *
	Eocene	Priabonian				Houldjinian/Ergilian/Ulangochuian		Tinguirirican		33.9
		Priabonian				Houldjinian/Ergilian/Ulangochuian		Divisaderan		35.9 *
		Bartonian				Sharamurunian/Irdinmanhan/Arshantan				37.71
		Lutetian								41.2
		Lutetian						Mustersan		41.9 *
		Ypresian					Bumbanian	Mustersan		47.8
		Ypresian					Bumbanian	Casamayoran		47.9 *
	Paleocene	Thanetian				Gashatan		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		Meishanian	251.902
		Changhsingian		Baoqingian	253.4 *
		Wuchiapingian		Longtanian †	Laoshanian				254.14
		Wuchiapingian		Longtanian †	Laibinian				257.7 *
	Guadalupian	Capitanian			Lengwuan				259.51
		Wordian			Kuhfengian				264.28
		Roadian			Kuhfengian				266.9
	Cisuralian	Kungurian			Luodianian				273.01
		Artinskian			Luodianian				283.5
		Artinskian			Longlinian				285.4 *
		Sakmarian			Longlinian				290.1
		Asselian			Zisongian				293.52
Carboniferous	Pennsylvanian	Gzhelian			Zisongian				298.9
		Gzhelian							300.1
		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					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	Niuchehean			Taoyuanian †	485.4
		Jiangshanian	Jiangshanian				489.5
		Paibian	Paibian				494
		Paibian	Paibian			Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian	Series 3 †			Guzhangian	Wangcunian †	497
		Guzhangian				Guzhangian		Arcadian	498.4
		Drumian				Drumian			500.5
		Wuliuan		Stage 5 †		Wuliuan/Taijangian			504.5
	Series 2	Stage 4				Branchian		Duyunian	509
		Stage 3				Branchian		Nangaoian	514
		Stage 3				Placentian		Nangaoian	517.1
	Terreneuvian	Stage 2						Meishucunian	521
		Fortunian						Meishucunian	529
		Fortunian						Jinnigian	530.7
										538.8