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
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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
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 127258 collections

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International Chronostratigraphic Timescale			Carboniferous of China	Neogene Mammal Ages of China	Cenozoic Subepochs	Ordovician of Britain
Quaternary	Pleistocene	Late Pleistocene		Nihewanian	Late Pleistocene					0.0117
		Chibanian			Middle Pleistocene					0.129
		Calabrian			Early Pleistocene					0.774
		Gelasian			Early Pleistocene					1.8
Neogene	Pliocene	Piacenzian		Yushean	Late Pliocene					2.58
		Zanclean		Yushean	Early Pliocene					3.6
		Zanclean		Baodean	Early Pliocene					4.9
	Miocene	Messinian			Late Miocene					5.333
		Tortonian								7.246
		Tortonian		Tunggurian						11.1
		Serravallian		Tunggurian	Middle Miocene					11.63
		Langhian		Shanwangian	Middle Miocene					13.82
		Burdigalian		Shanwangian	Early Miocene					15.98
		Burdigalian		Xiejiaan						16.9
		Aquitanian		Xiejiaan						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								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								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								298.9
		Gzhelian	Xiaodushanian			300 *
		Kasimovian	Xiaodushanian			303.7
		Kasimovian	Dalaun			305.8 *
		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				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		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
				Tremadoc	Cressagian			480.8 *
								485 *
Cambrian	Furongian	Stage 10						485.4
		Jiangshanian						489.5
		Paibian						494
	Miaolingian	Guzhangian						497
		Guzhangian						Arcadian	498.4
		Drumian							500.5
		Wuliuan							504.5
	Series 2	Stage 4						Branchian	509
		Stage 3						Branchian	514
		Stage 3						Placentian	517.1
	Terreneuvian	Stage 2							521
	Terreneuvian	Fortunian							529
										538.8