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
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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			Carboniferous of Western Europe		Cambrian of West Avalonia	Ordovician of Ibero-Bohemia				Neogene Mammal Ages of China	Permian of China	Cretaceous North American Land-Mammal Ages	Ordovician of the Baltic
Quaternary	Pleistocene	Late Pleistocene											Nihewanian				0.0117
		Chibanian															0.129
		Calabrian															0.774
		Gelasian															1.8
Neogene	Pliocene	Piacenzian	Tertiary †										Yushean				2.58
		Zanclean											Yushean				3.6
		Zanclean											Baodean				4.9
	Miocene	Messinian															5.333
		Tortonian															7.246
		Tortonian											Tunggurian				11.1
		Serravallian											Tunggurian				11.63
		Langhian											Shanwangian				13.82
		Burdigalian											Shanwangian				15.98
		Burdigalian											Xiejiaan				16.9
		Aquitanian											Xiejiaan				20.44
Paleogene	Oligocene	Chattian															23.03
	Oligocene	Rupelian															27.82
	Eocene	Priabonian															33.9
		Bartonian															37.71
		Lutetian															41.2
		Ypresian															47.8
	Paleocene	Thanetian															56
		Selandian															59.2
		Danian															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			290.1									Longlinian
		Asselian			Zisongian	293.52
		Asselian				Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian					298.9
							300.1
						Stephanian	Stephanian C	300.3 *
							Stephanian B	300.9 *
							Stephanian A	301.4 *
		Kasimovian					Stephanian A	303.7
		Kasimovian					Cantabrian	305 *
		Moscovian					Cantabrian	307
						Westphalian	Westphalian D	307.4 *
							Westphalian C	309.8
							Westphalian B	314.6
		Bashkirian					Westphalian B	315.2
							Westphalian A	317 *
						Namurian	Yeadonian	318.8 *
							Marsdenian	320.2 *
							Kinderscoutian	321.5 *
							Alportian	322 *
							Chokierian	323.1 *
	Mississippian	Serpukhovian					Chokierian	323.2
							Arnsbergian	324 *
							Pendleian	327.4 *
		Visean	Warnantian			Brigantian †	330.9
			Livian			Asbian †	336.3 *
			Moliniacian			Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian	Ivorian				346.7
		Tournaisian	Hastarian				353.7 *
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	Harju	Porkuni	443.8
		Katian					Kralodvorian		Bohdalec †	Pirgu	445.2
							Kralodvorian			Vormsi	449.6 *
							Berounian			Vormsi	449.7 *
										Nabala	Johvi †	450 *
								Viru		Rakvere		450.6 *
										Oandu		452 *
		Sandbian								Keila	Idavere †	453
										Haljala		453.9
										Haljala		Zahorany †/Vinice	Letna †	456.2 *
										Kukruse				456.4 *
										Uhaku	Aluoja †			457.5 *
									Liben †					458 *
	Middle Ordovician	Darriwilian												458.4
				Dobrotivian			458.5 *
				Dobrotivian			Lasnamagi			458.9 *
				Oretanian			Lasnamagi			459.7 *
							Aseri			460.4 *
							Aseri		Sarka †				461.7 *
							Oeland	Kunda					462.9 *
								Kunda			Valaste †/Hunderum		464.3 *
								Volkhov					Langevoja †/Vaana/Saka	467.1 *
		Dapingian							Klabava †					467.3
				Arenigian										468
					Billingen			469.3 *
	Early Ordovician	Floian						470
								Latorp †					470.1 *
					Hunneberg								473.7 *
		Tremadocian		Tremadocian	Hunneberg								477.7
					Varangu								481.3 *
					Pakerort								482.2 *
Cambrian	Furongian	Stage 10			Pakerort								485.4
													486.3 *
													486.5
		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