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
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

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 Eastern North America		Devonian of Czechoslovakia	Silurian of England		Cambrian Epochs	South American Land Mammal Ages
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												66
		Campanian												72.1
		Santonian												83.6
		Coniacian												86.3
		Turonian												89.8
		Cenomanian												93.9
	Early Cretaceous	Albian												100.5
		Aptian												113
		Barremian												121.4
		Hauterivian												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			259.51
		Wordian			264.28
		Roadian			266.9
	Cisuralian	Kungurian			273.01
		Artinskian			283.5
		Sakmarian			290.1
		Asselian			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			Conewangan/Conneautan/Canadaway	358.9
	Late Devonian	Frasnian			West Fallsian/Sonyean	372.2
	Middle Devonian	Givetian			Geneseean/Taghanican/Tioughniogan	Cazenovian	Srbsko	382.7
	Middle Devonian	Eifelian			Southwoodian	Cazenovian	Chotec	387.7
	Early Devonian	Emsian			Sawkillian/Deer Parkian	Helderbergian	Daleje/Zlichovian	393.3
		Pragian					Pragian	407.6
		Lochkovian					Lochkovian	410.8
Silurian	Pridoli							Red Downtonian/Temeside Shales/Downton Castle	Whitcliffe/Leintwardine	419.2
	Pridoli							Red Downtonian/Temeside Shales/Downton Castle	Bringewood/Elton	421.3
	Ludlow	Ludfordian						Coalbrookdale	Wenlock (England)/Tickwood	423
		Gorstian								425.6
		Gorstian							Buildwas	426.4 *
	Wenlock	Homerian							Buildwas	427.4
		Homerian						Wych	Woolhope	428.4 *
		Sheinwoodian								430.5
	Llandovery	Telychian								433.4
		Telychian								436.3 *
		Aeronian								438.5
		Aeronian	Cowleigh Park					439.3 *
		Rhuddanian	Cowleigh Park					440.8
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						Late Cambrian		485.4
		Jiangshanian								489.5
		Paibian								494
	Miaolingian	Guzhangian						Series 3 †		Middle Cambrian	497
		Drumian									500.5
		Wuliuan		Stage 5 †							504.5
	Series 2	Stage 4								Early Cambrian	509
	Series 2	Stage 3									514
	Terreneuvian	Stage 2									521
	Terreneuvian	Fortunian									529
														538.8