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
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, 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
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			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					Zisongian	298.9
		Gzhelian						300.1
		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					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