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. J. Prevosti, C. O. Romano, A. M. Forasiepi, S. Hemming, R. Bonini, A. M. Candela, E. Cerdeño, M. C. Madozzo Jaén, P. E. Ortiz, F. Pujos, L. Rasia, G. I. Schmidt, M. Taglioretti, R. D. E. MacPhee, and U. F. J. Pardiñas. 2021. New radiometric 40Ar–39Ar dates and faunistic analyses refine evolutionary dynamics of Neogene vertebrate assemblages in southern South America. Scientific Reports 2021(11):9830 view
J. J. Flynn and C. C. Swisher, III. 1995. Cenozoic South American Land Mammal Ages: correlation to global geochronology. Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication 54:317-333 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			South American Land Mammal Ages		Cambrian of Siberia			Cambrian Epochs	Permian of the Salt Range	Cambrian of Britain		Cretaceous Subepochs	Carboniferous Subepochs
Quaternary	Pleistocene	Late Pleistocene				Lujanian											0.0117
		Chibanian				Lujanian											0.129
		Chibanian				Ensenadan											0.3 *
		Calabrian				Ensenadan											0.774
		Calabrian				Sanandresian	Uquian †										1.7 *
		Gelasian				Sanandresian											1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Vorohuean											2.58
		Piacenzian				Chapadmalalan											2.9 *
		Zanclean				Chapadmalalan											3.6
						Montehermosan											3.7 *
						Huayquerian											4.9 *
	Miocene	Messinian															5.333
		Tortonian															7.246
						Chasicoan											7.9 *
						Mayoan											9.9 *
						Laventan											10.9 *
		Serravallian				Laventan											11.63
		Serravallian				Colloncuran											13.7 *
		Langhian				Colloncuran											13.82
		Langhian				Friasian											15.4 *
		Burdigalian				Friasian											15.98
						Santacrucian											16.2 *
						Colhuehuapian											17.4 *
		Aquitanian				Colhuehuapian											20.44
		Aquitanian				Deseadan											20.9 *
Paleogene	Oligocene	Chattian															23.03
		Rupelian															27.82
		Rupelian				Tinguirirican											28.9 *
	Eocene	Priabonian				Tinguirirican											33.9
		Priabonian				Divisaderan											35.9 *
		Bartonian															37.71
		Lutetian															41.2
		Lutetian				Mustersan											41.9 *
		Ypresian				Mustersan											47.8
		Ypresian				Casamayoran											47.9 *
	Paleocene	Thanetian				Riochican											56
						Itaboraian											56.9 *
						Peligran											58.9 *
		Selandian															59.2
		Danian															61.6
		Danian				Tiupampan											62.4 *
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
		Induan		251.2
		Induan		Kathwai	251.5 *
Permian	Lopingian	Changhsingian		Kathwai	251.902
					252.4 *
				Chhidru	252.9 *
		Wuchiapingian		Chhidru	Longtanian †		254.14
				Kalabagh			255 *
				Wargal			256 *
	Guadalupian	Capitanian					259.51
		Wordian					264.28
							265.3 *
				Amb			266.1 *
		Roadian		Amb			266.9
		Roadian					270.7 *
	Cisuralian	Kungurian					273.01
		Artinskian					283.5
		Sakmarian					290.1
		Asselian					293.52
Carboniferous	Pennsylvanian	Gzhelian					Late Pennsylvanian	298.9
		Kasimovian					Late Pennsylvanian	303.7
		Moscovian					Middle Pennsylvanian	307
		Bashkirian					Early Pennsylvanian	315.2
	Mississippian	Serpukhovian					Late Mississippian	323.2
		Visean					Middle Mississippian	330.9
		Tournaisian					Early Mississippian	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 *
										Mansian †	483.55 *
Cambrian	Furongian	Stage 10						Batyrbaian		Tavgian †	Ketyan †/Yurakian	Late Cambrian	Merioneth	Dolgellian/Trempealeauan		485.4
																486.3 *
																486.5
														Festiniogian		489.2 *
		Jiangshanian														489.5
								Aksaian								490.7 *
								Sakian								492.2 *
					Maentwrogian									493.1 *
		Paibian												494
		Paibian									Ensyan †/Maduan/Nganasanian			494.7 *
	Miaolingian	Guzhangian			Series 3 †			Ayusokkanian				Middle Cambrian	St Davids			497
		Guzhangian						Mayan/Menevian								499.5
		Drumian		500.5				Mayan/Menevian
		Wuliuan		Stage 5 †				Amgan/Solvan								504.5
	Series 2	Stage 4						Amgan/Solvan				Early Cambrian	Caerfai			509
								Toyonian		Lenian †						510 *
								Botomian								512.5 *
		Stage 3						Botomian								514
		Stage 3						Atdabanian								515.6 *
	Terreneuvian	Stage 2						Tommotian								521
		Stage 2						Nemakit-Daldynian								525.5
		Fortunian						Nemakit-Daldynian		Manykaian †						529
																	538.8