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
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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			Cretaceous North American Land-Mammal Ages	Carboniferous of China	Paleogene Mammal Ages of Asia		Permian Subages of Germany	Permian of North America		Silurian of the Baltic	Ordovician of North America
Neogene	Pliocene	Piacenzian	Tertiary †														2.58
	Pliocene	Zanclean															3.6
	Miocene	Messinian															5.333
		Tortonian															7.246
		Serravallian															11.63
		Langhian															13.82
		Burdigalian															15.98
		Aquitanian															20.44
Paleogene	Oligocene	Chattian						Tabenbulakian	Hsandagolian								23.03
	Oligocene	Rupelian						Kekeamuan	Hsandagolian								27.82
	Eocene	Priabonian						Houldjinian/Ergilian/Ulangochuian									33.9
		Bartonian						Sharamurunian/Irdinmanhan/Arshantan									37.71
		Lutetian															41.2
		Ypresian							Bumbanian								47.8
	Paleocene	Thanetian						Gashatan									56
		Selandian															59.2
		Danian															61.6
Cretaceous	Late Cretaceous	Maastrichtian				Lancian/Edmontonian											66
		Campanian				Judithian/Aquilan											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								Buntsandstein							251.902
	Lopingian	Wuchiapingian		Longtanian †						Buntsandstein							254.14
	Guadalupian	Capitanian								Ohre/Aller	Capitanian						259.51
		Wordian								Leine	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
		Gzhelian					Xiaodushanian										300 *
		Kasimovian					Xiaodushanian										303.7
		Kasimovian					Dalaun										305.8 *
		Moscovian															307
		Bashkirian															315.2
					Huashibanian		318.5 *
					Lousuan		321.2 *
	Mississippian	Serpukhovian			Dewunian		323.2
		Serpukhovian			Shangsian		330.8 *
		Visean			Shangsian		330.9
		Visean			Jiusian		335 *
		Tournaisian			Tangbagouan		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						Ohesaare		419.2
	Pridoli						Kaugetuma	421.7 *
	Ludlow	Ludfordian					Kuressaare	423
		Ludfordian	Paadla				423.4 *
		Gorstian	Paadla				425.6
	Wenlock	Homerian	Rootsikula			427.4
		Homerian	Jaagarahu			429.2 *
		Sheinwoodian	Jaagarahu			430.5
		Sheinwoodian	Jaani			431.8 *
	Llandovery	Telychian	Jaani			433.4
		Telychian	Adavere			434 *
		Aeronian	Adavere			438.5
		Aeronian	Raikkula			439.4 *
		Rhuddanian	Raikkula			440.8
		Rhuddanian	Juuru			441.4 *
Ordovician	Late Ordovician	Hirnantian				Cincinnatian	Gamachian	Harju	Porkuni				443.8
		Katian					Gamachian		Pirgu				445.2
							Richmondian		Pirgu				446 *
							Richmondian		Vormsi				449.6 *
							Maysvillian		Vormsi				Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
							Maysvillian		Nabala					Johvi †	450 *
							Edenian		Nabala						450.4 *
							Edenian	Viru	Rakvere						450.6 *
						Mohawkian	Chatfieldian		Rakvere						451.1 *
									Oandu						452 *
		Sandbian							Keila					Idavere †	453
							Turinian		Keila						453.7 *
									Haljala						453.9
									Kukruse						456.4 *
						Whiterockian			Kukruse				Canadian †		Chazyan †/Marmor	457 *
									Uhaku					Aluoja †		457.5 *
	Middle Ordovician	Darriwilian							Uhaku							458.4
									Lasnamagi							458.9 *
									Aseri							460.4 *
								Oeland	Kunda							462.9 *
				Valaste †/Hunderum					Kunda					464.3 *
									Volkhov					Langevoja †/Vaana/Saka		467.1 *
		Dapingian								467.3
							Rangerian			469.1 *
							Rangerian		Billingen	469.3 *
	Early Ordovician	Floian				Ibexian	Blackhillsian			Jeffersonian †					Cassinian †	470
				Latorp †												470.1 *
									Hunneberg							473.7 *
							Tulean									473.9 *
		Tremadocian					Tulean				477.7
							Stairsian				480.3 *
							Stairsian		Varangu		481.3 *
							Skullrockian		Varangu		Demingian †	482 *
									Pakerort		Demingian †	482.2 *
Cambrian	Furongian	Stage 10							Pakerort				485.4
													486.3 *
													486.5
													487.5
		Jiangshanian											489.5
		Paibian											494
	Miaolingian	Guzhangian											Series 3 †		497
		Drumian													500.5
		Wuliuan			Stage 5 †										504.5
																	509