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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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 126610 collections

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International Chronostratigraphic Timescale			Carboniferous of China	Central Paratethys Stages	Obsolete Carboniferous Ages of China	Cambrian of Britain		Devonian of France	Cambrian of Siberia			Obsolete Names for ICS Units
Neogene	Pliocene	Piacenzian										Tertiary †		2.58
	Pliocene	Zanclean												3.6
	Miocene	Messinian												5.333
		Tortonian		Pannonian										7.246
		Serravallian		Sarmatian										11.63
		Serravallian		Badenian										12.8 *
		Langhian												13.82
		Burdigalian												15.98
		Aquitanian												20.44
Paleogene	Oligocene	Chattian												23.03
	Oligocene	Rupelian												27.82
	Eocene	Priabonian												33.9
		Bartonian												37.71
		Lutetian												41.2
		Ypresian												47.8
	Paleocene	Thanetian												56
		Selandian												59.2
		Danian												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												251.902
	Lopingian	Wuchiapingian											Longtanian †	254.14
	Guadalupian	Capitanian												259.51
		Wordian												264.28
		Roadian												266.9
	Cisuralian	Kungurian												273.01
		Artinskian												283.5
		Sakmarian												290.1
		Asselian												293.52
Carboniferous	Pennsylvanian	Gzhelian			Mapingian †									298.9
		Gzhelian	Xiaodushanian											300 *
		Kasimovian	Xiaodushanian											303.7
			Dalaun											305.8 *
														305.9
		Moscovian												307
		Bashkirian												315.2
			Huashibanian			318.5 *
			Lousuan			321.2 *
	Mississippian	Serpukhovian	Dewunian			323.2
		Serpukhovian	Shangsian			330.8 *
		Visean	Shangsian			330.9
		Visean	Jiusian			335 *
		Tournaisian	Tangbagouan	346.7
Devonian	Late Devonian	Famennian		Famennian		358.9
	Late Devonian	Frasnian		Frasnian		372.2
	Middle Devonian	Givetian		Givetian		382.7
	Middle Devonian	Eifelian		Couvinien		387.7
	Early Devonian	Emsian				393.3
		Pragian				407.6
		Pragian		Coblencien		408.2 *
		Lochkovian		Gedinnine		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
		Tremadocian				477.7
		Tremadocian				Mansian †	483.55 *
Cambrian	Furongian	Stage 10				Merioneth	Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Stage 10					Festiniogian				489.2 *
		Jiangshanian									489.5
								Aksaian			490.7 *
								Sakian			492.2 *
							Maentwrogian				493.1 *
		Paibian									494
		Paibian								Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian				St Davids		Ayusokkanian			Series 3 †	497
		Guzhangian						Mayan/Menevian				499.5
		Drumian						Mayan/Menevian				500.5
		Wuliuan						Amgan/Solvan				Stage 5 †	504.5
	Series 2	Stage 4				Caerfai		Amgan/Solvan					509
								Toyonian	Lenian †				510 *
								Botomian					512.5 *
		Stage 3						Botomian					514
		Stage 3						Atdabanian					515.6 *
	Terreneuvian	Stage 2						Tommotian					521
		Stage 2						Nemakit-Daldynian					525.5
		Fortunian						Nemakit-Daldynian	Manykaian †				529
														538.8