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
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
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			Cambrian of West Avalonia	Ordovician of North America						Cambrian of North America		Devonian Subages	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																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		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				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				Cincinnatian	Gamachian	443.8
		Katian					Gamachian	445.2
							Richmondian	446 *
							Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
							Edenian		450.4 *
						Mohawkian	Chatfieldian		451.1 *
		Sandbian					Chatfieldian		453
							Turinian		453.7 *
						Whiterockian		Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian								458.4
		Dapingian								467.3
		Dapingian					Rangerian			469.1 *
	Early Ordovician	Floian				Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
		Floian					Tulean				473.9 *
		Tremadocian					Tulean				477.7
							Stairsian				480.3 *
							Skullrockian			Demingian †	482 *
Cambrian	Furongian	Stage 10					Skullrockian				Franconian †/Dresbachian/Millardan	Niuchehean	Taoyuanian †	485.4
		Stage 10										Niuchehean		Sunwaptan	487.5
		Jiangshanian										Jiangshanian		Sunwaptan	489.5
		Jiangshanian										Jiangshanian		Steptoean	493 *
		Paibian										Paibian			494
		Paibian										Paibian	Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian		Series 3 †							Marjumian	Albertian †	Guzhangian	Wangcunian †	497
		Guzhangian											Guzhangian		Arcadian	498.4
		Drumian											Drumian			500.5
		Wuliuan									Stage 5 †		Topazan	Wuliuan/Taijangian			504.5
		Wuliuan									Stage 5 †		Delamaran	Wuliuan/Taijangian			506.5
	Series 2	Stage 4										Branchian	Delamaran	Waucoban †	Duyunian		509
		Stage 4											Dyeran		Duyunian		511 *
		Stage 3											Dyeran		Nangaoian		514
													Montezuman				514.8 *
					Placentian							517.1	Montezuman
												Begadean	519.9 *
	Terreneuvian	Stage 2											Meishucunian		521
		Fortunian											Meishucunian		529
		Fortunian											Jinnigian		530.7
																		538.8