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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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 China			Devonian of France	Carboniferous of Western Europe		Cretaceous North American Land-Mammal Ages	Permian of North America		Devonian of Germany	Cambrian of North America		Central Paratethys Stages
Neogene	Pliocene	Piacenzian	Tertiary †																2.58
	Pliocene	Zanclean																	3.6
	Miocene	Messinian																	5.333
		Tortonian																Pannonian	7.246
		Serravallian																Sarmatian	11.63
		Serravallian																Badenian	12.8 *
		Langhian																	13.82
		Burdigalian																	15.98
		Aquitanian																	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																	251.902
	Lopingian	Wuchiapingian		Longtanian †															254.14
	Guadalupian	Capitanian											Capitanian						259.51
		Wordian											Wordian						264.28
		Roadian											Roadian						266.9
	Cisuralian	Kungurian											Leonardian	Cathedralian					273.01
		Kungurian												Hessian					281.9 *
		Artinskian												Hessian					283.5
		Artinskian											Wolfcampian	Lenoxian					286.1 *
		Sakmarian												Lenoxian					290.1
		Asselian												Nealian					293.52
		Asselian								Kuzel				Nealian					297.7
Carboniferous	Pennsylvanian	Gzhelian								Kuzel									298.9
										Stephanian	Stephanian C								300.3 *
											Stephanian B								300.9 *
											Stephanian A								301.4 *
		Kasimovian			303.7						Stephanian A
		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	Famennian				Wocklum/Dasberg/Hemberg/Nehden	358.9
	Late Devonian	Frasnian	Frasnian				Adorf	372.2
	Middle Devonian	Givetian	Givetian				Givetian	382.7
	Middle Devonian	Eifelian	Couvinien				Eifelian	387.7
	Early Devonian	Emsian					Emsian	393.3
		Pragian					Siegen	407.6
		Pragian	Coblencien				Siegen	408.2 *
		Lochkovian	Gedinnine				Gedinnine	410.8
Silurian	Pridoli							419.2
	Ludlow	Ludfordian						423
	Ludlow	Gorstian						425.6
	Wenlock	Homerian						Gleedonian	427.4
		Homerian						Whitwellian	429.7 *
		Sheinwoodian							430.5
	Llandovery	Telychian							433.4
		Aeronian							438.5
		Rhuddanian							440.8
Ordovician	Late Ordovician	Hirnantian							Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian							Chientangkiangian		Wufeng †	445.2
		Katian							Neichianshanian/Hanjiang			449.5
		Sandbian							Neichianshanian/Hanjiang			453
	Middle Ordovician	Darriwilian							Darriwilian	Guniu †/Hulo		458.4
		Darriwilian							Darriwilian	Hunjiang †	Dawan †/Daobaowan/Ningkuo	466.3 *
		Dapingian							Dapingian			467.3
	Early Ordovician	Floian							Yiyangian			470
		Tremadocian							Xinchangian			477.7
		Tremadocian							Xinchangian		Lianghekou †	477.9 *
Cambrian	Furongian	Stage 10										Franconian †/Dresbachian/Millardan			485.4
		Stage 10													Sunwaptan	487.5
		Jiangshanian		489.5											Sunwaptan
		Jiangshanian		Steptoean											493 *
		Paibian		Steptoean											494
	Miaolingian	Guzhangian		Series 3 †								Marjumian			Albertian †	497
		Drumian										Marjumian				500.5
		Wuliuan										Stage 5 †				Topazan	504.5
		Wuliuan										Stage 5 †				Delamaran	506.5
	Series 2	Stage 4													Waucoban †	Delamaran	509
		Stage 4														Dyeran	511 *
		Stage 3														Dyeran	514
													Montezuman	514.8 *
													Begadean	519.9 *
	Terreneuvian	Stage 2												521
	Terreneuvian	Fortunian												529
																			538.8