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, 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			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															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							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