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
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
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, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 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				Permian-Jurassic of New Zealand		Mesozoic Subages		Carboniferous of Western Europe
Quaternary	Holocene	Meghalayan								0
		Northgrippian								0.0042
		Greenlandian								0.0082
	Pleistocene	Late Pleistocene								0.0117
		Chibanian								0.129
		Calabrian								0.774
		Gelasian								1.8
Neogene	Pliocene	Piacenzian								2.58
	Pliocene	Zanclean								3.6
	Miocene	Messinian								5.333
		Tortonian								7.246
		Serravallian								11.63
		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				Late Maastrichtian/Early Maastrichtian				66
		Campanian				Late Campanian/Middle Campanian/Early Campanian				72.1
		Santonian				Late Santonian/Middle Santonian/Early Santonian				83.6
		Coniacian				Late Coniacian/Middle Coniacian/Early Coniacian				86.3
		Turonian				Late Turonian/Middle Turonian/Early Turonian				89.8
		Cenomanian				Late Cenomanian/Middle Cenomanian/Early Cenomanian				93.9
	Early Cretaceous	Albian				Late Albian				100.5
						Middle Albian				106.2 *
						Early Albian				109.9 *
		Aptian				Late Aptian				113
		Aptian				Early Aptian				119.5 *
		Barremian				Late Barremian/Early Barremian				121.4
		Hauterivian				Late Hauterivian/Early Hauterivian				125.77
		Valanginian				Late Valanginian/Early Valanginian				132.6
		Berriasian				Late Berriasian				139.8
						Middle Berriasian				140.6 *
						Early Berriasian				142.7 *
Jurassic	Late Jurassic	Tithonian		Oteke	Puaroan	Late Tithonian	Middle Tithonian			145
		Tithonian				Early Tithonian	Middle Tithonian			146.3 *
		Kimmeridgian				Late Kimmeridgian				149.2
				Kawhia	Ohauan	Late Kimmeridgian				150
					Ohauan	Early Kimmeridgian				152.2 *
					Heterian	Early Kimmeridgian				154.5
		Oxfordian				Late Oxfordian	Middle Oxfordian/Early Oxfordian			154.8
		Oxfordian					Middle Oxfordian/Early Oxfordian			157.9 *
	Middle Jurassic	Callovian				Late Callovian/Middle Callovian/Early Callovian				161.5
		Callovian			Temaikan	Late Callovian/Middle Callovian/Early Callovian				164.3
		Bathonian				Late Bathonian/Middle Bathonian/Early Bathonian				165.3
		Bajocian				Late Bajocian				168.2
		Bajocian				Early Bajocian				168.6 *
		Aalenian				Late Aalenian/Middle Aalenian/Early Aalenian				170.9
	Early Jurassic	Toarcian				Late Toarcian				174.7
				Herangi	Ururoan	Late Toarcian				176
						Middle Toarcian				180.4 *
						Early Toarcian				182.9 *
		Pliensbachian				Late Pliensbachian/Early Pliensbachian				184.2
		Pliensbachian			Aratauran	Late Pliensbachian/Early Pliensbachian				188.9
		Sinemurian				Late Sinemurian/Early Sinemurian				192.9
		Hettangian				Late Hettangian/Middle Hettangian/Early Hettangian				199.5
Triassic	Late Triassic	Rhaetian		Balfour	Otapirian					201.4
		Norian	Warepan		Sevatian	208.5
					Alaunian	213.2 *
					Lacian	216.7 *
			Otamitan			217
			Oretian			221
		Carnian	Oretian		Tuvalian	227
			Gore	Kaihikuan	Tuvalian	227.5
					Julian	233.4 *
	Middle Triassic	Ladinian			Longobardian	237
				Etalian	Longobardian	238
					Fassanian	239.7 *
		Anisian			Illyrian	242
					Pelsonian	243.8 *
					Bithynian	244.7 *
					Aegean	245.5 *
				Malakovian	Aegean	246
	Early Triassic	Olenekian			Spathian	247.2
					Smithian	248.9 *
				Nelsonian	Smithian	249
		Induan			Dienerian	251.2
					Griesbachian	251.4 *
			DUrville	Makarewan	Griesbachian	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
		Asselian				Kuzel		297.7
Carboniferous	Pennsylvanian	Gzhelian				Kuzel		298.9
						Stephanian		Stephanian C	300.3 *
								Stephanian B	300.9 *
								Stephanian A	301.4 *
		Kasimovian						Stephanian A	303.7
		Kasimovian						Cantabrian	305 *
		Moscovian						Cantabrian	307
						Westphalian		Westphalian D	307.4 *
								Westphalian C	309.8
								Westphalian B	314.6
		Bashkirian						Westphalian B	315.2
							Westphalian A	317 *
						Namurian	Yeadonian	318.8 *
							Marsdenian	320.2 *
							Kinderscoutian	321.5 *
							Alportian	322 *
							Chokierian	323.1 *
	Mississippian	Serpukhovian					Chokierian	323.2
							Arnsbergian	324 *
							Pendleian	327.4 *
		Visean				Warnantian	Brigantian †	330.9
						Livian	Asbian †	336.3 *
						Moliniacian	Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian				Ivorian		346.7
		Tournaisian				Hastarian		353.7 *
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
										419.2