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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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

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		Ordovician of Britain				Cambrian of Siberia
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			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			Ashgill		Hirnantian	443.8
		Katian					Rawtheyan	445.2
							Cautleyan	448.9 *
			Pusgillian			449.3 *
			Caradoc		Streffordian	Onnian †	449.6 *
					Cheneyan		451.5 *
					Burrellian		452.7 *
		Sandbian					453
						Actonian †	453.2 *
						Marshbrookian †	Woolstonian †	454.2 *
						Longvillian †		455.2 *
					Aurelucian	Longvillian †		456.8 *
					Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian	Llanvirn		Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian			Abereiddian/Early Llanvirn			461.3 *
		Dapingian			Abereiddian/Early Llanvirn			467.3
		Dapingian	Arenig		Fennian			468.4 *
	Early Ordovician	Floian			Fennian			470
					Whitlandian			471.1 *
					Moridunian			474.3 *
		Tremadocian	Tremadoc		Migneintian			477.7
					Cressagian			480.8 *
					Cressagian			Mansian †	483.55 *
								Mansian †	485 *
Cambrian	Furongian	Stage 10						Batyrbaian	Tavgian †	Ketyan †/Yurakian	Late Cambrian	485.4
		Jiangshanian						Batyrbaian				489.5
								Aksaian				490.7 *
								Sakian				492.2 *
		Paibian										494
		Paibian								Ensyan †/Maduan/Nganasanian		494.7 *
	Miaolingian	Guzhangian						Series 3 †	Ayusokkanian			Middle Cambrian	497
		Guzhangian							Mayan/Menevian				499.5
		Drumian							Mayan/Menevian				500.5
		Wuliuan		Stage 5 †					Amgan/Solvan				504.5
	Series 2	Stage 4							Amgan/Solvan			Early Cambrian	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