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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Cambrian of Australia	Paleogene Mammal Ages of Asia		Permian of the Pamirs	European Faunal Zones	Devonian of Eastern North America
Quaternary	Pleistocene	Gelasian								MN 17		1.8
Neogene	Pliocene	Piacenzian	Tertiary †							MN 16		2.58
		Piacenzian								MN 15		3.2
		Zanclean								MN 15		3.6
										MN 14		4.2
										MN 13		4.9
	Miocene	Messinian								MN 13		5.333
		Tortonian								MN 12		7.246
										MN 11		7.75
										MN 10		8.7
										MN 9		9.7
										MN 7 + 8		11.1
		Serravallian								MN 7 + 8		11.63
		Serravallian								MN 6		12.8 *
		Langhian								MN 5		13.82
		Burdigalian								MN 4		15.98
										MN 3		16.9
										MN 2		20
		Aquitanian								MN 2		20.44
		Aquitanian								MN 1		22.4
Paleogene	Oligocene	Chattian					Tabenbulakian	Hsandagolian				23.03
	Oligocene	Rupelian					Kekeamuan	Hsandagolian				27.82
	Eocene	Priabonian					Houldjinian/Ergilian/Ulangochuian					33.9
		Bartonian					Sharamurunian/Irdinmanhan/Arshantan					37.71
		Lutetian										41.2
		Ypresian						Bumbanian				47.8
	Paleocene	Thanetian					Gashatan					56
		Selandian										59.2
		Danian										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			251.902
	Lopingian	Wuchiapingian		Longtanian †					Dzhulfian			254.14
	Guadalupian	Capitanian							Midian			259.51
		Wordian							Midian			264.28
		Wordian							Murgabian			266.2 *
		Roadian			266.9				Murgabian
	Cisuralian	Kungurian			Kubergandian	273.01
		Kungurian			Bolorian	279.8
		Artinskian			Bolorian	283.5
		Artinskian			Yakhtashian	286
		Sakmarian			Sakmarian	290.1
		Asselian			Asselian	293.52
Carboniferous	Pennsylvanian	Gzhelian				298.9
		Kasimovian				303.7
		Moscovian				307
		Bashkirian				315.2
	Mississippian	Serpukhovian				323.2
		Visean				330.9
		Tournaisian				346.7
Devonian	Late Devonian	Famennian				Conewangan/Conneautan/Canadaway			358.9
	Late Devonian	Frasnian				West Fallsian/Sonyean			372.2
	Middle Devonian	Givetian				Geneseean/Taghanican/Tioughniogan			Cazenovian		382.7
	Middle Devonian	Eifelian				Southwoodian			Cazenovian		387.7
	Early Devonian	Emsian				Sawkillian/Deer Parkian			Helderbergian		393.3
		Pragian									407.6
		Lochkovian								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	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	Datsonian				485.4
		Stage 10	Payntonian				486.8 *
		Jiangshanian	Iverian				489.5
		Paibian	Idamean				494
	Miaolingian	Guzhangian	Series 3 †				Mindyallan	497
		Guzhangian					Boomerangian	499
		Drumian					Undillan	500.5
		Drumian					Floran	503
		Wuliuan		Stage 5 †			Templetonian	504.5
		Wuliuan		Stage 5 †			Ordian	507.8 *
	Series 2	Stage 4					Ordian	509
												510.8 *