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. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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	Central Paratethys Stages	Permian of the Pamirs	Permian of China	Cenozoic Subepochs	Paleogene Mammal Ages of Asia
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					Pannonian			Late Miocene			7.246
		Serravallian					Sarmatian			Middle Miocene			11.63
		Serravallian					Badenian						12.8 *
		Langhian											13.82
		Burdigalian								Early Miocene			15.98
		Aquitanian								Early Miocene			20.44
Paleogene	Oligocene	Chattian								Late Oligocene	Tabenbulakian	Hsandagolian	23.03
	Oligocene	Rupelian								Early Oligocene	Kekeamuan	Hsandagolian	27.82
	Eocene	Priabonian								Late Eocene	Houldjinian/Ergilian/Ulangochuian		33.9
		Bartonian								Middle Eocene	Sharamurunian/Irdinmanhan/Arshantan		37.71
		Lutetian								Middle Eocene			41.2
		Ypresian								Early Eocene		Bumbanian	47.8
	Paleocene	Thanetian								Late Paleocene	Gashatan		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						Dorashamian	Meishanian				251.902
		Changhsingian						Dorashamian	Baoqingian				253.4 *
		Wuchiapingian		Longtanian †				Dzhulfian	Laoshanian				254.14
		Wuchiapingian		Longtanian †				Dzhulfian	Laibinian				257.7 *
	Guadalupian	Capitanian						Midian	Lengwuan				259.51
		Wordian						Midian	Kuhfengian				264.28
		Wordian						Murgabian					266.2 *
		Roadian						Murgabian					266.9
	Cisuralian	Kungurian						Kubergandian	Luodianian				273.01
		Kungurian						Bolorian					279.8
		Artinskian											283.5
									Longlinian				285.4 *
					Yakhtashian	286
		Sakmarian			Sakmarian	290.1
		Asselian			Asselian	Zisongian		293.52
Carboniferous	Pennsylvanian	Gzhelian						298.9
								Xiaodushanian	300 *
									300.1
		Kasimovian							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		Cayugan					419.2
	Pridoli		Niagaran					422.5 *
	Ludlow	Ludfordian						423
	Ludlow	Gorstian						425.6
	Wenlock	Homerian						Lockportian	427.4
	Wenlock	Sheinwoodian							430.5
	Llandovery	Telychian						Ontarian	433.4
		Aeronian							438.5
									Alexandrian	438.7 *
			Medinan					Clinton		440.1 *
										440.7 *
		Rhuddanian								440.8
Ordovician	Late Ordovician	Hirnantian								443.8
		Katian								445.2
		Sandbian								453
	Middle Ordovician	Darriwilian								458.4
	Middle Ordovician	Dapingian								467.3
	Early Ordovician	Floian								470
	Early Ordovician	Tremadocian								477.7
Cambrian	Furongian	Stage 10								485.4
		Jiangshanian								489.5
		Paibian								494
	Miaolingian	Guzhangian								Series 3 †	497
		Drumian									500.5
		Wuliuan		Stage 5 †							504.5
													509