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
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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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			Cambrian of West Avalonia	South American Land Mammal Ages		Ordovician of Ibero-Bohemia				Ordovician of North America
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
	Early Triassic	Induan		251.2
Permian	Lopingian	Changhsingian		251.902
	Lopingian	Wuchiapingian		Longtanian †	254.14
	Guadalupian	Capitanian			259.51
		Wordian			264.28
		Roadian			266.9
	Cisuralian	Kungurian			273.01
		Artinskian			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				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				Kosovian		Cincinnatian	Gamachian	443.8
		Katian				Kralodvorian			Gamachian	Bohdalec †	445.2
			Richmondian			Kralodvorian	446 *
			Richmondian			Berounian	449.7 *
			Maysvillian				Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian		449.8 *
			Edenian						450.4 *
			Mohawkian					Chatfieldian	451.1 *
		Sandbian						Chatfieldian	453
								Turinian	453.7 *
								Turinian	Zahorany †/Vinice		Letna †	456.2 *
			Whiterockian					Canadian †	Zahorany †/Vinice			Chazyan †/Marmor	457 *
									Liben †				458 *
	Middle Ordovician	Darriwilian											458.4
						Dobrotivian							458.5 *
						Oretanian							459.7 *
									Sarka †				461.7 *
		Dapingian							Klabava †				467.3
						Arenigian							468
							Rangerian						469.1 *
	Early Ordovician	Floian	Ibexian				Blackhillsian					Jeffersonian †	Cassinian †	470
		Floian					Tulean							473.9 *
		Tremadocian				Tremadocian	Tulean							477.7
							Stairsian							480.3 *
							Skullrockian						Demingian †	482 *
Cambrian	Furongian	Stage 10					Skullrockian							485.4
		Stage 10												487.5
		Jiangshanian												489.5
		Paibian												494
	Miaolingian	Guzhangian												Series 3 †	497
		Guzhangian													Arcadian	498.4
		Drumian														500.5
		Wuliuan		Stage 5 †												504.5
	Series 2	Stage 4													Branchian	509
		Stage 3													Branchian	514
		Stage 3													Placentian	517.1
	Terreneuvian	Stage 2														521
	Terreneuvian	Fortunian														529
																	538.8