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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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		Paleogene Mammal Ages of Asia		Obsolete Carboniferous Ages of China	Silurian of the Baltic
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	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					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
		Kasimovian					Mapingian †	303.7
		Kasimovian						305.9
		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				Ohesaare	419.2
	Pridoli				Kaugetuma	421.7 *
	Ludlow	Ludfordian			Kuressaare	423
		Ludfordian			Paadla	423.4 *
		Gorstian			Paadla	425.6
	Wenlock	Homerian			Rootsikula	427.4
		Homerian			Jaagarahu	429.2 *
		Sheinwoodian			Jaagarahu	430.5
		Sheinwoodian			Jaani	431.8 *
	Llandovery	Telychian			Jaani	433.4
		Telychian			Adavere	434 *
		Aeronian			Adavere	438.5
		Aeronian			Raikkula	439.4 *
		Rhuddanian			Raikkula	440.8
		Rhuddanian			Juuru	441.4 *
									443.8