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
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			Ordovician of Ibero-Bohemia				Cenozoic Subepochs	Devonian of Germany	Carboniferous Subepochs	Ordovician of the Baltic
Quaternary	Pleistocene	Late Pleistocene								Late Pleistocene						0.0117
		Chibanian								Middle Pleistocene						0.129
		Calabrian								Early Pleistocene						0.774
		Gelasian								Early Pleistocene						1.8
Neogene	Pliocene	Piacenzian	Tertiary †							Late Pliocene						2.58
	Pliocene	Zanclean								Early Pliocene						3.6
	Miocene	Messinian								Late Miocene						5.333
		Tortonian								Late Miocene						7.246
		Serravallian								Middle Miocene						11.63
		Langhian								Middle Miocene						13.82
		Burdigalian								Early Miocene						15.98
		Aquitanian								Early Miocene						20.44
Paleogene	Oligocene	Chattian								Late Oligocene						23.03
	Oligocene	Rupelian								Early Oligocene						27.82
	Eocene	Priabonian								Late Eocene						33.9
		Bartonian								Middle Eocene						37.71
		Lutetian								Middle Eocene						41.2
		Ypresian								Early Eocene						47.8
	Paleocene	Thanetian								Late Paleocene						56
		Selandian								Middle Paleocene						59.2
		Danian								Early Paleocene						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														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										Late Pennsylvanian				298.9
		Kasimovian										Late Pennsylvanian				303.7
		Moscovian										Middle Pennsylvanian				307
		Bashkirian										Early Pennsylvanian				315.2
	Mississippian	Serpukhovian			Late Mississippian	323.2
		Visean			Middle Mississippian	330.9
		Tournaisian			Early Mississippian	346.7
Devonian	Late Devonian	Famennian			Wocklum/Dasberg/Hemberg/Nehden		358.9
	Late Devonian	Frasnian			Adorf		372.2
	Middle Devonian	Givetian			Givetian		382.7
	Middle Devonian	Eifelian			Eifelian		387.7
	Early Devonian	Emsian			Emsian		393.3
		Pragian			Siegen		407.6
		Lochkovian			Gedinnine		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					Kosovian	Harju	Porkuni		443.8
		Katian					Kralodvorian		Bohdalec †		Pirgu	445.2
							Kralodvorian				Vormsi	449.6 *
			Berounian				449.7 *				Vormsi
							Nabala			Johvi †	450 *
							Viru	Rakvere			450.6 *
								Oandu			452 *
		Sandbian						Keila		Idavere †	453
								Haljala			453.9
								Haljala			Zahorany †/Vinice	Letna †	456.2 *
								Kukruse					456.4 *
								Uhaku		Aluoja †			457.5 *
									Liben †				458 *
	Middle Ordovician	Darriwilian											458.4
			Dobrotivian										458.5 *
			Dobrotivian					Lasnamagi					458.9 *
			Oretanian					Lasnamagi					459.7 *
								Aseri					460.4 *
								Aseri	Sarka †				461.7 *
							Oeland	Kunda					462.9 *
								Kunda		Valaste †/Hunderum			464.3 *
								Volkhov					Langevoja †/Vaana/Saka	467.1 *
		Dapingian							Klabava †					467.3
			Arenigian											468
								Billingen						469.3 *
	Early Ordovician	Floian												470
										Latorp †				470.1 *
								Hunneberg						473.7 *
		Tremadocian	Tremadocian					Hunneberg						477.7
								Varangu						481.3 *
								Pakerort						482.2 *
Cambrian	Furongian	Stage 10						Pakerort						485.4
														486.3 *
														486.5
		Jiangshanian												489.5
		Paibian		494
	Miaolingian	Guzhangian		Series 3 †										497
		Drumian												500.5
		Wuliuan												Stage 5 †	504.5
																509