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. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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

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			Permian of China	Cenozoic Subepochs	Carboniferous of Western Europe		Cambrian of West Avalonia
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									23.03
	Oligocene	Rupelian					Early Oligocene									27.82
	Eocene	Priabonian					Late Eocene									33.9
		Bartonian					Middle Eocene									37.71
		Lutetian					Middle Eocene									41.2
		Ypresian					Early Eocene									47.8
	Paleocene	Thanetian					Late Paleocene									56
		Selandian					Middle Paleocene									59.2
		Danian					Early Paleocene									61.6
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
		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						Cayugan	419.2
	Pridoli						Niagaran	422.5 *
	Ludlow	Ludfordian						423
	Ludlow	Gorstian						425.6
	Wenlock	Homerian						Lockportian	427.4
	Wenlock	Sheinwoodian							430.5
	Llandovery	Telychian						Ontarian	433.4
		Aeronian							438.5
									Alexandrian	438.7 *
							Medinan	Clinton		440.1 *
										440.7 *
		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						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