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
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

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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cambrian of Australia	Devonian of Czechoslovakia	Permian of China	Silurian of North America			Cretaceous Subepochs	Devonian of Germany	Neogene Mammal Ages of China	Cambrian of Britain
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										Senonian					66
		Campanian															72.1
		Santonian															83.6
		Coniacian															86.3
		Turonian															89.8
		Cenomanian															93.9
	Early Cretaceous	Albian										Gallic					100.5
		Aptian															113
		Barremian															121.4
		Hauterivian										Neocomian					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	Wocklum/Dasberg/Hemberg/Nehden					358.9
	Late Devonian	Frasnian	Adorf					372.2
	Middle Devonian	Givetian	Srbsko					Givetian	382.7
	Middle Devonian	Eifelian	Chotec					Eifelian	387.7
	Early Devonian	Emsian	Daleje/Zlichovian					Emsian	393.3
		Pragian	Pragian					Siegen	407.6
		Lochkovian	Lochkovian					Gedinnine	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										443.8
		Katian										445.2
		Sandbian										453
	Middle Ordovician	Darriwilian										458.4
	Middle Ordovician	Dapingian										467.3
	Early Ordovician	Floian										470
	Early Ordovician	Tremadocian										477.7
Cambrian	Furongian	Stage 10										Datsonian	Merioneth	Dolgellian/Trempealeauan	485.4
												Payntonian		Dolgellian/Trempealeauan	486.8 *
												Payntonian		Festiniogian	489.2 *
		Jiangshanian		Iverian								489.5		Festiniogian
		Jiangshanian		Iverian								Maentwrogian		493.1 *
		Paibian		Idamean								Maentwrogian		494
	Miaolingian	Guzhangian		Series 3 †								Mindyallan	St Davids		497
		Guzhangian										Boomerangian			499
		Drumian										Undillan			500.5
		Drumian										Floran			503
		Wuliuan										Stage 5 †			Templetonian	504.5
		Wuliuan										Stage 5 †			Ordian	507.8 *
	Series 2	Stage 4											Caerfai		Ordian	509
		Stage 4													510.8 *
		Stage 3													514
	Terreneuvian	Stage 2													521
	Terreneuvian	Fortunian													529
																	538.8