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			Devonian of France	Silurian of the Baltic	Permian of China	Cambrian 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	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						Ohesaare		Cayugan	419.2
							Kaugetuma		Cayugan	421.7 *
							Kaugetuma		Niagaran	422.5 *
	Ludlow	Ludfordian					Kuressaare			423
		Ludfordian					Paadla			423.4 *
		Gorstian					Paadla			425.6
	Wenlock	Homerian					Rootsikula			Lockportian	427.4
		Homerian					Jaagarahu			Lockportian	429.2 *
		Sheinwoodian					Jaagarahu				430.5
		Sheinwoodian					Jaani				431.8 *
	Llandovery	Telychian					Jaani			Ontarian	433.4
		Telychian					Adavere				434 *
		Aeronian									438.5
											Alexandrian	438.7 *
							Raikkula					439.4 *
									Medinan	Clinton		440.1 *
												440.7 *
		Rhuddanian										440.8
		Rhuddanian					Juuru					441.4 *
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		Niuchehean								Taoyuanian †	Merioneth	Dolgellian/Trempealeauan	485.4
		Stage 10		Niuchehean										Festiniogian	489.2 *
		Jiangshanian		Jiangshanian										Festiniogian	489.5
		Jiangshanian		Jiangshanian										Maentwrogian	493.1 *
		Paibian		Paibian											494
		Paibian		Paibian	Waergangian †/Youshuanian							494.9 *
	Miaolingian	Guzhangian		Series 3 †	Guzhangian							Wangcunian †	St Davids		497
		Drumian			Drumian							Wangcunian †			500.5
		Wuliuan			Stage 5 †							Wuliuan/Taijangian				504.5
	Series 2	Stage 4										Duyunian	Caerfai			509
	Series 2	Stage 3										Nangaoian				514
	Terreneuvian	Stage 2										Meishucunian				521
		Fortunian										Meishucunian				529
		Fortunian										Jinnigian				530.7
																	538.8