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

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cambrian of Australia	Ordovician of Australia	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	Givetian					382.7
	Middle Devonian	Eifelian	Eifelian					387.7
	Early Devonian	Emsian	Emsian					393.3
		Pragian	Siegen					407.6
		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	Bolindian									443.8
		Katian	Bolindian									445.2
			Eastonian									449 *
			Gisbornian									452 *
		Sandbian	Gisbornian									453
	Middle Ordovician	Darriwilian	Darriwilian									458.4
		Dapingian	Yapeenian									467.3
		Dapingian	Castlemainian									468.5 *
	Early Ordovician	Floian	Chewtonian									470
			Bendigonian									471.8 *
			Lancefieldian	473.5 *
		Tremadocian	Lancefieldian	477.7
		Tremadocian	Warendian	482.8 *
Cambrian	Furongian	Stage 10	Datsonian									Merioneth	Dolgellian/Trempealeauan	485.4
			Payntonian										Dolgellian/Trempealeauan	486.8 *
			Payntonian										Festiniogian	489.2 *
		Jiangshanian	Iverian										Festiniogian	489.5
		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										Ordian	Caerfai		509
		Stage 4													510.8 *
		Stage 3													514
	Terreneuvian	Stage 2													521
	Terreneuvian	Fortunian													529
																538.8