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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Cambrian of North America		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																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		Franconian †/Dresbachian/Millardan				Pakerort								485.4
									486.3 *
									486.5
					Sunwaptan					487.5
		Jiangshanian			Sunwaptan					489.5
		Jiangshanian			Steptoean					493 *
		Paibian			Steptoean					494
	Miaolingian	Guzhangian		Series 3 †	Marjumian					Albertian †						497
		Drumian			Marjumian											500.5
		Wuliuan			Stage 5 †											Topazan	504.5
		Wuliuan			Stage 5 †											Delamaran	506.5
	Series 2	Stage 4								Waucoban †						Delamaran	509
		Stage 4														Dyeran	511 *
		Stage 3														Dyeran	514
																Montezuman	514.8 *
																Begadean	519.9 *
	Terreneuvian	Stage 2															521
	Terreneuvian	Fortunian															529
																		538.8