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
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
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
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
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 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 126848 collections

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International Chronostratigraphic Timescale			Permian-Jurassic of New Zealand		Cenozoic Subepochs	Ordovician of North America						Cretaceous North American Land-Mammal Ages
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			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										Lancian/Edmontonian	66
		Campanian										Judithian/Aquilan	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		259.51
		Wordian		Flettian		264.28
		Wordian		Barettian		266
		Roadian				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			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					Cincinnatian	Gamachian	443.8
		Katian						Gamachian	445.2
								Richmondian	446 *
								Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
								Edenian		450.4 *
							Mohawkian	Chatfieldian		451.1 *
		Sandbian						Chatfieldian		453
								Turinian		453.7 *
							Whiterockian		Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian									458.4
		Dapingian									467.3
		Dapingian						Rangerian			469.1 *
	Early Ordovician	Floian					Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
		Floian						Tulean				473.9 *
		Tremadocian						Tulean				477.7
								Stairsian				480.3 *
								Skullrockian			Demingian †	482 *
Cambrian	Furongian	Stage 10						Skullrockian				485.4
													487.5