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
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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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

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 126762 collections

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International Chronostratigraphic Timescale			Ordovician of the Baltic				South American Land Mammal Ages		Central Paratethys Stages	Obsolete Carboniferous Ages of China	Permian-Jurassic of New Zealand		Cenozoic Subepochs
Quaternary	Pleistocene	Late Pleistocene					Lujanian						Late Pleistocene	0.0117
		Chibanian					Lujanian						Middle Pleistocene	0.129
		Chibanian					Ensenadan						Middle Pleistocene	0.3 *
		Calabrian					Ensenadan						Early Pleistocene	0.774
		Calabrian					Sanandresian	Uquian †						1.7 *
		Gelasian					Sanandresian							1.8
Neogene	Pliocene	Piacenzian					Vorohuean						Late Pliocene	2.58
		Piacenzian					Chapadmalalan						Late Pliocene	2.9 *
		Zanclean					Chapadmalalan						Early Pliocene	3.6
							Montehermosan							3.7 *
							Huayquerian							4.9 *
	Miocene	Messinian											Late Miocene	5.333
		Tortonian							Pannonian					7.246
							Chasicoan							7.9 *
							Mayoan							9.9 *
							Laventan							10.9 *
		Serravallian							Sarmatian				Middle Miocene	11.63
									Badenian					12.8 *
							Colloncuran		Badenian					13.7 *
		Langhian					Colloncuran							13.82
		Langhian					Friasian							15.4 *
		Burdigalian					Friasian						Early Miocene	15.98
							Santacrucian							16.2 *
							Colhuehuapian							17.4 *
		Aquitanian					Colhuehuapian							20.44
		Aquitanian					Deseadan							20.9 *
Paleogene	Oligocene	Chattian											Late Oligocene	23.03
		Rupelian											Early Oligocene	27.82
		Rupelian					Tinguirirican						Early Oligocene	28.9 *
	Eocene	Priabonian					Tinguirirican						Late Eocene	33.9
		Priabonian					Divisaderan						Late Eocene	35.9 *
		Bartonian											Middle Eocene	37.71
		Lutetian												41.2
		Lutetian					Mustersan							41.9 *
		Ypresian					Mustersan						Early Eocene	47.8
		Ypresian					Casamayoran						Early Eocene	47.9 *
	Paleocene	Thanetian					Riochican						Late Paleocene	56
							Itaboraian							56.9 *
							Peligran							58.9 *
		Selandian											Middle Paleocene	59.2
		Danian											Early Paleocene	61.6
		Danian					Tiupampan						Early Paleocene	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	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			Mapingian †	298.9
		Kasimovian			Mapingian †	303.7
		Kasimovian				305.9
		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				Harju	Porkuni	443.8
		Katian					Pirgu	445.2
							Vormsi	449.6 *
							Nabala	Johvi †	450 *
						Viru	Rakvere		450.6 *
							Oandu		452 *
		Sandbian					Keila	Idavere †	453
							Haljala		453.9
							Kukruse		456.4 *
							Uhaku	Aluoja †	457.5 *
	Middle Ordovician	Darriwilian					Uhaku		458.4
							Lasnamagi		458.9 *
							Aseri		460.4 *
						Oeland	Kunda		462.9 *
							Kunda	Valaste †/Hunderum	464.3 *
							Volkhov		Langevoja †/Vaana/Saka	467.1 *
		Dapingian					Volkhov			467.3
		Dapingian					Billingen			469.3 *
	Early Ordovician	Floian								470
								Latorp †		470.1 *
							Hunneberg			473.7 *
		Tremadocian					Hunneberg			477.7
							Varangu			481.3 *
							Pakerort			482.2 *
Cambrian	Furongian	Stage 10					Pakerort			485.4
Cambrian	Furongian	Stage 10								486.3 *
														486.5