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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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

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			Carboniferous of China	Permian of Western Europe	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		Zechstein	254.14
	Guadalupian	Capitanian		Rotliegendes	259.51
		Wordian			264.28
		Roadian			266.9
	Cisuralian	Kungurian			273.01
		Artinskian		Autunian	283.5
		Sakmarian			290.1
		Asselian			293.52
Carboniferous	Pennsylvanian	Gzhelian			Mapingian †				298.9
		Gzhelian							Xiaodushanian	300 *
		Kasimovian							Xiaodushanian	303.7
									Dalaun	305.8 *
										305.9
		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						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				438.5	Adavere
		Aeronian				Raikkula	439.4 *
		Rhuddanian				Raikkula	440.8
		Rhuddanian				Juuru	441.4 *
											443.8