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
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
M. Freudenthal. 2006. Mammal Paleogene zones. personal communication 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	Silurian of England	Devonian of Germany	Cambrian of Kazakhstan	Permo-Triassic Subages of Eastern Europe		Carboniferous Subepochs	Mammal Paleogene Zones
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							MP 30/MP 29/MP 28/MP 27/MP 26	MP 25	23.03
	Oligocene	Rupelian				Early Oligocene							MP 24/MP 23/MP 22/MP 21	MP 25	27.82
	Eocene	Priabonian				Late Eocene							MP 20/MP 19/MP 18/MP 17B/MP 17A		33.9
		Bartonian				Middle Eocene							MP 16		37.71
		Lutetian				Middle Eocene							MP 15/MP 14/MP 13/MP 12/MP 11		41.2
		Ypresian				Early Eocene							MP 10/MP 8 + 9/MP 7		47.8
	Paleocene	Thanetian				Late Paleocene							MP 6	MP 1 - 5	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								Vokhmian					247.2
	Early Triassic	Induan								Vokhmian					251.2
Permian	Lopingian	Changhsingian													251.902
	Lopingian	Wuchiapingian		Longtanian †						Late Vyatkian/Early Vyatkian					254.14
	Guadalupian	Capitanian								Late Severodvinian/Early Severodvinian					259.51
		Wordian								Late Urzhumian/Early Urzhumian					264.28
		Roadian								Late Kazanian/Early Kazanian					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		Conewangan/Conneautan/Canadaway	358.9
	Late Devonian	Frasnian			Adorf		West Fallsian/Sonyean	372.2
	Middle Devonian	Givetian			Givetian		Geneseean/Taghanican/Tioughniogan	Cazenovian	382.7
	Middle Devonian	Eifelian			Eifelian		Southwoodian	Cazenovian	387.7
	Early Devonian	Emsian			Emsian		Sawkillian/Deer Parkian	Helderbergian	393.3
		Pragian			Siegen				407.6
		Lochkovian			Gedinnine				410.8
Silurian	Pridoli				Red Downtonian/Temeside Shales/Downton Castle			Whitcliffe/Leintwardine			Ohesaare	419.2
								Bringewood/Elton			Ohesaare	421.3
								Bringewood/Elton			Kaugetuma	421.7 *
	Ludlow	Ludfordian			Coalbrookdale			Wenlock (England)/Tickwood			Kuressaare	423
		Ludfordian						Wenlock (England)/Tickwood			Paadla	423.4 *
		Gorstian										425.6
		Gorstian						Buildwas				426.4 *
	Wenlock	Homerian						Buildwas			Rootsikula	427.4
					Wych			Woolhope			Rootsikula	428.4 *
											Jaagarahu	429.2 *
		Sheinwoodian									Jaagarahu	430.5
		Sheinwoodian	Jaani			431.8 *
	Llandovery	Telychian	Jaani			433.4
			Adavere			434 *
								436.3 *
		Aeronian						438.5
					Cowleigh Park			439.3 *
			Raikkula					439.4 *
		Rhuddanian	Raikkula					440.8
		Rhuddanian	Juuru					441.4 *
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						Ungurian			477.7
Cambrian	Furongian	Stage 10						Batyrbaian			485.4
		Jiangshanian						Batyrbaian			489.5
								Aksaian			490.7 *
								Sakian			492.2 *
		Paibian						Sakian			494
	Miaolingian	Guzhangian						Series 3 †			Ayusokkanian	497
		Guzhangian										499.5
		Drumian									Zhanaarykian	500.5
		Drumian									Tuesaian	503
		Wuliuan		Stage 5 †							Tuesaian	504.5
		Wuliuan		Stage 5 †								505.3
	Series 2	Stage 4										509
											Toyonian	510 *
											Botomian	512.5 *
		Stage 3									Botomian	514
		Stage 3									Atdabanian	515.6 *
	Terreneuvian	Stage 2									Tommotian	521
															525.5