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
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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 125938 collections

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International Chronostratigraphic Timescale			Cretaceous-Cenozoic of New Zealand		Ordovician of Britain				Cambrian of Australia	Paleogene Mammal Ages of Asia		Obsolete Names for ICS Units
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								Tertiary †	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						Tabenbulakian	Hsandagolian		23.03
				Duntroonian									25.2
				Whaingaroan									27.3
		Rupelian								Kekeamuan			27.82
	Eocene	Priabonian								Houldjinian/Ergilian/Ulangochuian			33.9
			Arnold	Runangan									34.6
				Kaiatan									36.7
		Bartonian		Kaiatan						Sharamurunian/Irdinmanhan/Arshantan			37.71
		Bartonian		Bortonian									39.1
		Lutetian		Bortonian									41.2
			Dannevirke	Porangan									42.6
				Heretaungan									45.7
		Ypresian		Heretaungan							Bumbanian		47.8
				Mangaorapan									48.9
				Waipawan									52
	Paleocene	Thanetian		Teurian						Gashatan			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			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				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 *
			Longvillian †				Aurelucian		456.8 *
			Soudleyan †/Harnagian/Costonian				Aurelucian		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							Datsonian	485.4
		Stage 10							Payntonian	486.8 *
		Jiangshanian							Iverian	489.5
		Paibian							Idamean	494
	Miaolingian	Guzhangian							Mindyallan	Series 3 †	497
		Guzhangian							Boomerangian		499
		Drumian			Undillan				500.5
		Drumian			Floran				503
		Wuliuan			Templetonian				Stage 5 †		504.5
		Wuliuan			Ordian				Stage 5 †		507.8 *
	Series 2	Stage 4			Ordian						509
													510.8 *