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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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			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						Harju	Porkuni	443.8
		Katian							Pirgu	445.2
									Vormsi	449.6 *
			Nabala			Johvi †			450 *
			Viru					Rakvere	450.6 *
								Oandu	452 *
		Sandbian				Keila		Idavere †	453
						Haljala			453.9
						Kukruse			456.4 *
						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				Volkhov				467.3
		Dapingian				Billingen				469.3 *
	Early Ordovician	Floian								470
								Latorp †		470.1 *
						Hunneberg				473.7 *
		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