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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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 126156 collections

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International Chronostratigraphic Timescale			Cenozoic Subepochs	Permian-Jurassic of New Zealand		Cambrian of Australia	Permian of North America		Cambrian of Britain		Ordovician of Australia	Ordovician of North America
Quaternary	Holocene	Meghalayan														0
		Northgrippian														0.0042
		Greenlandian														0.0082
	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	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													23.03
	Oligocene	Rupelian	Early Oligocene													27.82
	Eocene	Priabonian	Late Eocene													33.9
		Bartonian	Middle Eocene													37.71
		Lutetian	Middle Eocene													41.2
		Ypresian	Early Eocene													47.8
	Paleocene	Thanetian	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		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											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	254.14
		Wuchiapingian			Puruhauan	254.2
	Guadalupian	Capitanian		Aparima	Flettian	Capitanian	259.51
		Wordian			Flettian	Wordian	264.28
		Wordian			Barettian	Wordian	266
		Roadian				Roadian	266.9
	Cisuralian	Kungurian				Leonardian	Cathedralian	273.01
					Mangapirian		Cathedralian	276
							Hessian	281.9 *
		Artinskian						283.5
					Telfordian			285
					Telfordian	Wolfcampian	Lenoxian	286.1 *
								288.5
		Sakmarian						290.1
		Asselian					Nealian	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	427.4
	Wenlock	Sheinwoodian	430.5
	Llandovery	Telychian	433.4
		Aeronian	438.5
		Rhuddanian	440.8
Ordovician	Late Ordovician	Hirnantian	Bolindian					Cincinnatian	Gamachian	443.8
		Katian							Gamachian	445.2
									Richmondian	446 *
			Eastonian						Richmondian	449 *
									Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
									Edenian		450.4 *
								Mohawkian	Chatfieldian		451.1 *
			Gisbornian								452 *
		Sandbian									453
									Turinian		453.7 *
								Whiterockian		Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian	Darriwilian									458.4
		Dapingian	Yapeenian									467.3
			Castlemainian									468.5 *
			Castlemainian						Rangerian			469.1 *
	Early Ordovician	Floian	Chewtonian					Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
			Bendigonian										471.8 *
			Lancefieldian										473.5 *
									Tulean				473.9 *
		Tremadocian							Tulean				477.7
									Stairsian				480.3 *
									Skullrockian			Demingian †	482 *
			Warendian									Demingian †	482.8 *
Cambrian	Furongian	Stage 10	Datsonian							Merioneth	Dolgellian/Trempealeauan			485.4
			Payntonian											486.8 *
														487.5
											Festiniogian			489.2 *
		Jiangshanian	Iverian								Festiniogian			489.5
		Jiangshanian	Iverian								Maentwrogian			493.1 *
		Paibian	Idamean								Maentwrogian			494
	Miaolingian	Guzhangian	Mindyallan							St Davids				497
			Mindyallan											Arcadian	498.4
			Boomerangian												499
		Drumian	Undillan												500.5
		Drumian	Floran												503
		Wuliuan	Templetonian												504.5
		Wuliuan	Ordian												507.8 *
	Series 2	Stage 4	Ordian							Caerfai				Branchian	509
		Stage 4													510.8 *
		Stage 3		514
		Stage 3		Placentian	517.1
	Terreneuvian	Stage 2			521
	Terreneuvian	Fortunian			529
																538.8