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			Silurian Ages of Europe	Cenozoic Subepochs	Neogene Mammal Ages of China	Permian of North America		Cretaceous Subepochs		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						Gleedonian	427.4
		Homerian						Whitwellian	429.7 *
		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