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, 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
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

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			Cenozoic Subepochs	Neogene Mammal Ages of China	Permian of North America		Cretaceous Subepochs	Cambrian of China		Ordovician of the Baltic
Quaternary	Pleistocene	Late Pleistocene				Late Pleistocene	Nihewanian							0.0117
		Chibanian				Middle Pleistocene								0.129
		Calabrian				Early Pleistocene								0.774
		Gelasian				Early Pleistocene								1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Late Pliocene	Yushean							2.58
		Zanclean				Early Pliocene	Yushean							3.6
		Zanclean				Early Pliocene	Baodean							4.9
	Miocene	Messinian				Late Miocene								5.333
		Tortonian												7.246
		Tortonian					Tunggurian							11.1
		Serravallian				Middle Miocene	Tunggurian							11.63
		Langhian				Middle Miocene	Shanwangian							13.82
		Burdigalian				Early Miocene	Shanwangian							15.98
		Burdigalian					Xiejiaan							16.9
		Aquitanian					Xiejiaan							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								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												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
Carboniferous	Pennsylvanian	Gzhelian							298.9
		Kasimovian							303.7
		Moscovian							307
		Bashkirian							315.2
	Mississippian	Serpukhovian							323.2
		Visean							330.9
		Tournaisian							346.7
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						419.2
	Ludlow	Ludfordian					423
	Ludlow	Gorstian					425.6
	Wenlock	Homerian					427.4
	Wenlock	Sheinwoodian					430.5
	Llandovery	Telychian					433.4
		Aeronian					438.5
		Rhuddanian					440.8
Ordovician	Late Ordovician	Hirnantian					Harju		Porkuni		443.8
		Katian	Pirgu			445.2
			Vormsi			449.6 *
			Nabala			Johvi †			450 *
			Viru				Rakvere		450.6 *
							Oandu		452 *
		Sandbian				Keila	Idavere †		453
						Haljala			453.9
						Kukruse			456.4 *
						Uhaku	Aluoja †		457.5 *
	Middle Ordovician	Darriwilian				Uhaku			458.4
						Lasnamagi			458.9 *
						Aseri			460.4 *
			Oeland			Kunda			462.9 *
						Kunda	Valaste †/Hunderum		464.3 *
						Volkhov			Langevoja †/Vaana/Saka	467.1 *
		Dapingian				Volkhov				467.3
		Dapingian				Billingen				469.3 *
	Early Ordovician	Floian								470
							Latorp †			470.1 *
						Hunneberg				473.7 *
		Tremadocian				Hunneberg				477.7
						Varangu				481.3 *
						Pakerort				482.2 *
Cambrian	Furongian	Stage 10				Pakerort	Niuchehean			Taoyuanian †		485.4
												486.3 *
												486.5
		Jiangshanian					Jiangshanian					489.5
		Paibian					Paibian					494
		Paibian					Paibian			Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian					Series 3 †			Guzhangian		Wangcunian †	497
		Drumian								Drumian		Wangcunian †	500.5
		Wuliuan		Stage 5 †						Wuliuan/Taijangian			504.5
	Series 2	Stage 4								Duyunian			509
	Series 2	Stage 3								Nangaoian			514
	Terreneuvian	Stage 2								Meishucunian			521
		Fortunian								Meishucunian			529
		Fortunian								Jinnigian			530.7
														538.8