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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 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 North America						Cambrian of China		Ordovician of the Baltic			Cenozoic Subepochs	Paleogene Mammal Ages of Asia		Permian of China	Cretaceous North American Land-Mammal Ages
Quaternary	Pleistocene	Late Pleistocene															Late Pleistocene					0.0117
		Chibanian															Middle Pleistocene					0.129
		Calabrian															Early Pleistocene					0.774
		Gelasian															Early Pleistocene					1.8
Neogene	Pliocene	Piacenzian	Tertiary †														Late Pliocene					2.58
	Pliocene	Zanclean															Early Pliocene					3.6
	Miocene	Messinian															Late Miocene					5.333
		Tortonian															Late Miocene					7.246
		Serravallian															Middle Miocene					11.63
		Langhian															Middle Miocene					13.82
		Burdigalian															Early Miocene					15.98
		Aquitanian															Early Miocene					20.44
Paleogene	Oligocene	Chattian															Late Oligocene	Tabenbulakian	Hsandagolian			23.03
	Oligocene	Rupelian															Early Oligocene	Kekeamuan	Hsandagolian			27.82
	Eocene	Priabonian															Late Eocene	Houldjinian/Ergilian/Ulangochuian				33.9
		Bartonian															Middle Eocene	Sharamurunian/Irdinmanhan/Arshantan				37.71
		Lutetian															Middle Eocene					41.2
		Ypresian															Early Eocene		Bumbanian			47.8
	Paleocene	Thanetian															Late Paleocene	Gashatan				56
		Selandian															Middle Paleocene					59.2
		Danian															Early Paleocene					61.6
Cretaceous	Late Cretaceous	Maastrichtian																			Lancian/Edmontonian	66
		Campanian																			Judithian/Aquilan	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	Cincinnatian			Gamachian	Harju	Porkuni	443.8
		Katian				Gamachian		Pirgu	445.2
						Richmondian		Pirgu	446 *
						Richmondian		Vormsi	449.6 *
						Maysvillian		Vormsi	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
						Maysvillian		Nabala		Johvi †	450 *
						Edenian		Nabala			450.4 *
						Edenian	Viru	Rakvere			450.6 *
			Mohawkian			Chatfieldian		Rakvere			451.1 *
								Oandu			452 *
		Sandbian						Keila		Idavere †	453
						Turinian		Keila			453.7 *
								Haljala			453.9
								Kukruse			456.4 *
			Whiterockian					Kukruse	Canadian †		Chazyan †/Marmor	457 *
								Uhaku		Aluoja †		457.5 *
	Middle Ordovician	Darriwilian						Uhaku				458.4
								Lasnamagi				458.9 *
								Aseri				460.4 *
							Oeland	Kunda				462.9 *
								Kunda		Valaste †/Hunderum		464.3 *
								Volkhov				Langevoja †/Vaana/Saka	467.1 *
		Dapingian											467.3
						Rangerian							469.1 *
						Rangerian		Billingen					469.3 *
	Early Ordovician	Floian	Ibexian			Blackhillsian					Jeffersonian †		Cassinian †	470
										Latorp †				470.1 *
								Hunneberg						473.7 *
						Tulean								473.9 *
		Tremadocian				Tulean								477.7
						Stairsian								480.3 *
						Stairsian		Varangu						481.3 *
						Skullrockian		Varangu					Demingian †	482 *
				Pakerort				482.2 *					Demingian †
Cambrian	Furongian	Stage 10		Pakerort							Niuchehean		Taoyuanian †		485.4
															486.3 *
															486.5
															487.5
		Jiangshanian									Jiangshanian				489.5
		Paibian									Paibian				494
		Paibian									Paibian		Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian									Series 3 †		Guzhangian		Wangcunian †	497
		Drumian			Drumian								500.5		Wangcunian †
		Wuliuan			Stage 5 †								Wuliuan/Taijangian			504.5
	Series 2	Stage 4											Duyunian			509
	Series 2	Stage 3											Nangaoian			514
	Terreneuvian	Stage 2											Meishucunian			521
		Fortunian											Meishucunian			529
		Fortunian											Jinnigian			530.7
																						538.8