PBDB Interval

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
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
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) 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
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 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
F. J. Prevosti, C. O. Romano, A. M. Forasiepi, S. Hemming, R. Bonini, A. M. Candela, E. Cerdeño, M. C. Madozzo Jaén, P. E. Ortiz, F. Pujos, L. Rasia, G. I. Schmidt, M. Taglioretti, R. D. E. MacPhee, and U. F. J. Pardiñas. 2021. New radiometric 40Ar–39Ar dates and faunistic analyses refine evolutionary dynamics of Neogene vertebrate assemblages in southern South America. Scientific Reports 2021(11):9830 view
J. J. Flynn and C. C. Swisher, III. 1995. Cenozoic South American Land Mammal Ages: correlation to global geochronology. Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication 54:317-333 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 127403 collections

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International Chronostratigraphic Timescale			Silurian Ages of Europe	Permian-Jurassic of New Zealand		European Faunal Units	Permo-Triassic Subages of Eastern Europe	Cenozoic Subepochs	South American Land Mammal Ages		Ordovician of Britain
Quaternary	Pleistocene	Late Pleistocene						Late Pleistocene	Lujanian			0.0117
		Chibanian						Middle Pleistocene	Lujanian			0.129
		Chibanian						Middle Pleistocene	Ensenadan			0.3 *
		Calabrian						Early Pleistocene	Ensenadan			0.774
		Calabrian							Sanandresian	Uquian †		1.7 *
		Gelasian							Sanandresian			1.8
Neogene	Pliocene	Piacenzian				Villanyian		Late Pliocene	Vorohuean			2.58
						Villanyian			Chapadmalalan			2.9 *
						Ruscinian						3.1 *
		Zanclean						Early Pliocene				3.6
									Montehermosan			3.7 *
									Huayquerian			4.9 *
	Miocene	Messinian				Turolian		Late Miocene				5.333
		Tortonian										7.246
									Chasicoan			7.9 *
						Vallesian			Chasicoan			8.7
									Mayoan			9.9 *
									Laventan			10.9 *
		Serravallian				Astaracian		Middle Miocene	Laventan			11.63
		Serravallian							Colloncuran			13.7 *
		Langhian							Colloncuran			13.82
		Langhian							Friasian			15.4 *
		Burdigalian				Orleanian		Early Miocene	Friasian			15.98
									Santacrucian			16.2 *
									Colhuehuapian			17.4 *
						Agenian						20
		Aquitanian										20.44
		Aquitanian							Deseadan			20.9 *
Paleogene	Oligocene	Chattian						Late Oligocene				23.03
		Rupelian						Early Oligocene				27.82
		Rupelian						Early Oligocene	Tinguirirican			28.9 *
	Eocene	Priabonian						Late Eocene	Tinguirirican			33.9
		Priabonian						Late Eocene	Divisaderan			35.9 *
		Bartonian						Middle Eocene				37.71
		Lutetian										41.2
		Lutetian							Mustersan			41.9 *
		Ypresian						Early Eocene	Mustersan			47.8
		Ypresian						Early Eocene	Casamayoran			47.9 *
	Paleocene	Thanetian						Late Paleocene	Riochican			56
									Itaboraian			56.9 *
									Peligran			58.9 *
		Selandian						Middle Paleocene				59.2
		Danian						Early Paleocene				61.6
		Danian						Early Paleocene	Tiupampan			62.4 *
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		Oteke	Puaroan							145
		Kimmeridgian		Oteke	Puaroan							149.2
				Kawhia	Ohauan							150
					Heterian							154.5
		Oxfordian										154.8
	Middle Jurassic	Callovian										161.5
		Callovian			Temaikan							164.3
		Bathonian										165.3
		Bajocian	168.2
		Aalenian	170.9
	Early Jurassic	Toarcian	174.7
		Toarcian	Herangi	Ururoan	176
		Pliensbachian		Ururoan	184.2
		Pliensbachian		Aratauran	188.9
		Sinemurian			192.9
		Hettangian			199.5
Triassic	Late Triassic	Rhaetian	Balfour	Otapirian	201.4
		Norian		Warepan	208.5
				Otamitan	217
				Oretian	221
		Carnian		Oretian	227
		Carnian	Gore	Kaihikuan	227.5
	Middle Triassic	Ladinian		Kaihikuan	237
		Ladinian		Etalian	238
		Anisian		Etalian	242
		Anisian		Malakovian	246
	Early Triassic	Olenekian		Malakovian	Vokhmian		247.2
		Olenekian		Nelsonian			249
		Induan		Nelsonian			251.2
		Induan	DUrville	Makarewan			251.5
Permian	Lopingian	Changhsingian		Makarewan			251.902
		Changhsingian		Waiitian			253.2
		Wuchiapingian		Waiitian	Late Vyatkian/Early Vyatkian		254.14
		Wuchiapingian		Puruhauan	Late Vyatkian/Early Vyatkian		254.2
	Guadalupian	Capitanian	Aparima	Flettian	Late Severodvinian/Early Severodvinian		259.51
		Wordian		Flettian	Late Urzhumian/Early Urzhumian		264.28
		Wordian		Barettian	Late Urzhumian/Early Urzhumian	266
		Roadian			Late Kazanian/Early Kazanian	266.9
	Cisuralian	Kungurian				273.01
		Kungurian		Mangapirian		276
		Artinskian		Mangapirian		283.5
				Telfordian		285
						288.5
		Sakmarian				290.1
		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				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				Gleedonian	427.4
		Homerian				Whitwellian	429.7 *
		Sheinwoodian					430.5
	Llandovery	Telychian					433.4
		Aeronian					438.5
		Rhuddanian					440.8
Ordovician	Late Ordovician	Hirnantian					Ashgill	Hirnantian	443.8
		Katian						Rawtheyan	445.2
								Cautleyan	448.9 *
								Pusgillian	449.3 *
							Caradoc	Streffordian	Onnian †	449.6 *
								Cheneyan		451.5 *
								Burrellian		452.7 *
		Sandbian								453
									Actonian †	453.2 *
									Marshbrookian †	Woolstonian †	454.2 *
									Longvillian †		455.2 *
								Aurelucian	Longvillian †		456.8 *
								Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian					Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian						Abereiddian/Early Llanvirn			461.3 *
		Dapingian						Abereiddian/Early Llanvirn			467.3
		Dapingian					Arenig	Fennian			468.4 *
	Early Ordovician	Floian						Fennian			470
								Whitlandian			471.1 *
								Moridunian			474.3 *
		Tremadocian					Tremadoc	Migneintian			477.7
		Tremadocian					Tremadoc	Cressagian			480.8 *
												485 *