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
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			Permian Subages of Germany	Permian of North America		Silurian of the Baltic	Ordovician of North America						Ordovician of the Baltic
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																23.03
	Oligocene	Rupelian																27.82
	Eocene	Priabonian																33.9
		Bartonian																37.71
		Lutetian																41.2
		Ypresian																47.8
	Paleocene	Thanetian																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
		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				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	433.4		Jaani
		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 *
											Kunda		Valaste †/Hunderum		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