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
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

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			Cretaceous-Cenozoic of New Zealand		Ordovician of Britain			Silurian of England		Ordovician of Ibero-Bohemia
Quaternary	Holocene	Meghalayan	Wanganui	Haweran									0
		Northgrippian											0.0042
		Greenlandian											0.0082
	Pleistocene	Late Pleistocene											0.0117
		Chibanian											0.129
		Chibanian		Castlecliffian									0.34
		Calabrian		Castlecliffian									0.774
		Calabrian		Nukumaruan									1.63
		Gelasian		Nukumaruan									1.8
		Gelasian		Mangapanian									2.4
Neogene	Pliocene	Piacenzian		Mangapanian									2.58
		Piacenzian		Waipipian									3
		Zanclean		Waipipian									3.6
		Zanclean		Opoitian									3.7
	Miocene	Messinian	Taranaki	Kapitean									5.333
		Messinian		Tongaporutuan									7.2
		Tortonian		Tongaporutuan									7.246
		Tortonian	Southland	Waiauan									11.04
		Serravallian		Waiauan									11.63
		Serravallian		Lillburnian									13.05
		Langhian		Lillburnian									13.82
				Clifdenian									15.1
			Pareora	Altonian									15.9
		Burdigalian		Altonian									15.98
		Burdigalian		Otaian									18.7
		Aquitanian		Otaian									20.44
		Aquitanian	Landon	Waitakian									21.7
Paleogene	Oligocene	Chattian		Waitakian									23.03
				Duntroonian									25.2
				Whaingaroan									27.3
		Rupelian											27.82
	Eocene	Priabonian											33.9
			Arnold	Runangan									34.6
				Kaiatan									36.7
		Bartonian		Kaiatan									37.71
		Bartonian		Bortonian									39.1
		Lutetian		Bortonian									41.2
			Dannevirke	Porangan									42.6
				Heretaungan									45.7
		Ypresian		Heretaungan									47.8
				Mangaorapan									48.9
				Waipawan									52
	Paleocene	Thanetian		Teurian									56
		Selandian											59.2
		Danian											61.6
Cretaceous	Late Cretaceous	Maastrichtian	Mata	Haumurian									66
		Campanian		Haumurian									72.1
		Santonian		Piripauan									83.6
		Santonian	Raukumara	Teratan									86.1
		Coniacian											86.3
		Turonian											89.8
				Mangaotanean									90.5
				Arowhanan									93.7
		Cenomanian		Arowhanan									93.9
			Clarence	Ngaterian									95.2
				Motuan									99.5
	Early Cretaceous	Albian		Motuan									100.5
				Urutawan									103.3
			Taitai	Korangan									108.4
		Aptian		Korangan									113
		Aptian											117.5
		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
		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				Red Downtonian/Temeside Shales/Downton Castle	Whitcliffe/Leintwardine	419.2
	Pridoli				Red Downtonian/Temeside Shales/Downton Castle	Bringewood/Elton	421.3
	Ludlow	Ludfordian			Coalbrookdale	Wenlock (England)/Tickwood	423
		Gorstian					425.6
		Gorstian				Buildwas	426.4 *
	Wenlock	Homerian				Buildwas	427.4
		Homerian			Wych	Woolhope	428.4 *
		Sheinwoodian					430.5
	Llandovery	Telychian					433.4
		Telychian					436.3 *
		Aeronian					438.5
		Aeronian			Cowleigh Park		439.3 *
		Rhuddanian			Cowleigh Park		440.8
Ordovician	Late Ordovician	Hirnantian			Ashgill		Hirnantian	Kosovian	443.8
		Katian					Rawtheyan	Kralodvorian	Bohdalec †	445.2
							Cautleyan			448.9 *
							Pusgillian			449.3 *
					Caradoc		Streffordian			Onnian †	449.6 *
				Berounian			Streffordian	449.7 *
							Cheneyan	451.5 *
							Burrellian	452.7 *
		Sandbian						453
								Actonian †		453.2 *
			Marshbrookian †					Woolstonian †		454.2 *
			Longvillian †							455.2 *
										Zahorany †/Vinice	Letna †	456.2 *
							Aurelucian					456.8 *
			Soudleyan †/Harnagian/Costonian									457.4 *
			Soudleyan †/Harnagian/Costonian						Liben †			458 *
	Middle Ordovician	Darriwilian	Llanvirn		Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn							458.4
				Dobrotivian								458.5 *
				Oretanian								459.7 *
					Abereiddian/Early Llanvirn							461.3 *
									Sarka †			461.7 *
		Dapingian							Klabava †			467.3
				Arenigian								468
			Arenig		Fennian							468.4 *
	Early Ordovician	Floian			Fennian							470
					Whitlandian							471.1 *
					Moridunian							474.3 *
		Tremadocian	Tremadoc	Migneintian	Tremadocian							477.7
			Tremadoc	Cressagian								480.8 *
												485 *
													485.4