PBDB Timescale

International Chronostratigraphic Timescale

The interval definitions in this timescale are derived from the following sources:

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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 view

There are 59 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 127017 collections

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International Chronostratigraphic Timescale			Cambrian of West Avalonia	Paleogene Mammal Ages of Asia		Permian of China	European Faunal Zones	Permian Subages of Germany	Cenozoic Subepochs	Neogene Mammal Ages of China
Quaternary	Pleistocene	Late Pleistocene							Late Pleistocene	Nihewanian	0.0117
		Chibanian							Middle Pleistocene		0.129
		Calabrian							Early Pleistocene		0.774
		Gelasian					MN 17		Early Pleistocene		1.8
Neogene	Pliocene	Piacenzian					MN 16		Late Pliocene	Yushean	2.58
		Piacenzian					MN 15		Late Pliocene		3.2
		Zanclean					MN 15		Early Pliocene		3.6
							MN 14				4.2
							MN 13			Baodean	4.9
	Miocene	Messinian					MN 13		Late Miocene		5.333
		Tortonian					MN 12				7.246
							MN 11				7.75
							MN 10				8.7
							MN 9				9.7
							MN 7 + 8			Tunggurian	11.1
		Serravallian					MN 7 + 8		Middle Miocene		11.63
		Serravallian					MN 6				12.8 *
		Langhian					MN 5			Shanwangian	13.82
		Burdigalian					MN 4		Early Miocene	Shanwangian	15.98
							MN 3			Xiejiaan	16.9
							MN 2				20
		Aquitanian					MN 2				20.44
		Aquitanian					MN 1				22.4
Paleogene	Oligocene	Chattian		Tabenbulakian	Hsandagolian				Late Oligocene		23.03
	Oligocene	Rupelian		Kekeamuan	Hsandagolian				Early Oligocene		27.82
	Eocene	Priabonian		Houldjinian/Ergilian/Ulangochuian					Late Eocene		33.9
		Bartonian		Sharamurunian/Irdinmanhan/Arshantan					Middle Eocene		37.71
		Lutetian							Middle Eocene		41.2
		Ypresian			Bumbanian				Early Eocene		47.8
	Paleocene	Thanetian		Gashatan					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				Meishanian		Buntsandstein			251.902
		Changhsingian				Baoqingian					253.4 *
		Wuchiapingian	Laoshanian			254.14
		Wuchiapingian	Laibinian			257.7 *
	Guadalupian	Capitanian	Lengwuan			Ohre/Aller		259.51
		Wordian	Kuhfengian			Leine		264.28
		Roadian	Kuhfengian					266.9
	Cisuralian	Kungurian	Luodianian					273.01
		Artinskian	Luodianian					283.5
		Artinskian	Longlinian					285.4 *
		Sakmarian	Longlinian					290.1
		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						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		Franconian †/Dresbachian/Millardan	485.4
		Stage 10			Sunwaptan		487.5
		Jiangshanian			Sunwaptan		489.5
		Jiangshanian			Steptoean		493 *
		Paibian			Steptoean		494
	Miaolingian	Guzhangian		Marjumian	Albertian †		497
		Guzhangian					Arcadian	498.4
		Drumian						500.5
		Wuliuan		Topazan				504.5
		Wuliuan		Delamaran				506.5
	Series 2	Stage 4		Delamaran	Branchian		Waucoban †	509
		Stage 4		Dyeran				511 *
		Stage 3		Dyeran				514
				Montezuman				514.8 *
				Montezuman	Placentian			517.1
				Begadean				519.9 *
	Terreneuvian	Stage 2						521
	Terreneuvian	Fortunian						529
											538.8