PBDB Timescale

Obsolete Names for ICS Units

The interval definitions in this timescale are derived from the following sources:

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
K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 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
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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view

There are 55 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 92 collections

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Central Paratethys Stages	Silurian of the Baltic	North American Land Mammal Ages	Permian of China	Ammonite Chrons of Northwest Europe		Mesozoic Subages
Quaternary	Holocene	Meghalayan						Saintaugustinean						0
		Meghalayan						Santarosean						0.0004
		Northgrippian												0.0042
		Greenlandian												0.0082
	Pleistocene	Late Pleistocene												0.0117
		Late Pleistocene						Rancholabrean						0.014
		Chibanian						Rancholabrean						0.129
		Chibanian						Irvingtonian						0.21
		Calabrian						Irvingtonian						0.774
		Calabrian						Blancan						1.4
		Gelasian												1.8
Neogene	Pliocene	Piacenzian	Tertiary †											2.58
		Zanclean												3.6
		Zanclean						Hemphillian						4.7
	Miocene	Messinian												5.333
		Tortonian				Pannonian								7.246
		Tortonian				Pannonian		Clarendonian						9.4
		Serravallian				Sarmatian		Clarendonian						11.63
						Sarmatian		Barstovian						12.5
						Badenian								12.8 *
		Langhian												13.82
		Burdigalian												15.98
								Hemingfordian						16.3
								Arikareean						18.5
		Aquitanian												20.44
Paleogene	Oligocene	Chattian												23.03
		Rupelian												27.82
								Whitneyan						29.5
								Orellan						31.8
	Eocene	Priabonian						Chadronian						33.9
		Priabonian						Duchesnean						37
		Bartonian						Duchesnean						37.71
		Bartonian						Uintan						39.7
		Lutetian						Uintan						41.2
		Lutetian						Bridgerian						46.2
		Ypresian						Bridgerian						47.8
								Wasatchian						50.5
								Clarkforkian						54.9
	Paleocene	Thanetian						Clarkforkian						56
		Thanetian						Tiffanian						56.2
		Selandian						Tiffanian						59.2
		Selandian						Torrejonian						60.9
		Danian						Torrejonian						61.6
		Danian						Puercan						63.8
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										Late Tithonian	Middle Tithonian	145
		Tithonian										Early Tithonian	Middle Tithonian	146.3 *
		Kimmeridgian										Late Kimmeridgian		149.2
		Kimmeridgian		Early Kimmeridgian	152.2 *
		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
		Bathonian		Late Bathonian/Middle Bathonian/Early Bathonian			165.3
		Bajocian		Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites			Late Bajocian		168.2
							Late Bajocian		Humphresianum	168.4
							Early Bajocian		Humphresianum	168.6 *
		Aalenian		Concavum/Murchisonae/Opalinum					Late Aalenian/Middle Aalenian/Early Aalenian	170.9
	Early Jurassic	Toarcian		Levesquei/Variabilis/Bifrons			Thouarsense		Late Toarcian	174.7
									Late Toarcian	180.1
									Middle Toarcian	180.4 *
				Serpentinum/Falciferum/Tenuicostatum					Middle Toarcian	182
				Serpentinum/Falciferum/Tenuicostatum					Early Toarcian	182.9 *
		Pliensbachian		Spinatum/Margaritatus/Davoei/Ibex/Jamesoni					Late Pliensbachian/Early Pliensbachian	184.2
		Sinemurian		Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi					Late Sinemurian/Early Sinemurian	192.9
		Hettangian		Angulata/Liasicus/Planorbis					Late Hettangian/Middle Hettangian/Early Hettangian	199.5
Triassic	Late Triassic	Rhaetian								201.4
		Norian							Sevatian	208.5
									Alaunian	213.2 *
						Lacian			216.7 *
		Carnian				Tuvalian			227
		Carnian				Julian			233.4 *
	Middle Triassic	Ladinian				Longobardian			237
		Ladinian				Fassanian			239.7 *
		Anisian				Illyrian			242
						Pelsonian			243.8 *
						Bithynian			244.7 *
						Aegean			245.5 *
	Early Triassic	Olenekian				Spathian			247.2
		Olenekian				Smithian			248.9 *
		Induan				Dienerian			251.2
		Induan				Griesbachian			251.4 *
Permian	Lopingian	Changhsingian				Meishanian				251.902
		Changhsingian				Baoqingian				253.4 *
		Wuchiapingian				Longtanian †				Laoshanian	254.14
		Wuchiapingian				Longtanian †				Laibinian	257.7 *
	Guadalupian	Capitanian								Lengwuan	Capitanian	259.51
		Wordian								Kuhfengian	Wordian	264.28
		Roadian								Kuhfengian	Roadian	266.9
	Cisuralian	Kungurian								Luodianian	Leonardian	Cathedralian	273.01
		Kungurian										Hessian	281.9 *
		Artinskian											283.5
										Longlinian			285.4 *
			Wolfcampian					Lenoxian			286.1 *
		Sakmarian						Lenoxian			290.1
		Asselian						Zisongian		Nealian	293.52
Carboniferous	Pennsylvanian	Gzhelian						Zisongian			Mapingian †	298.9
		Gzhelian										300.1
		Kasimovian										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			425.6							Paadla
	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 *
Ordovician	Late Ordovician	Hirnantian					443.8
		Katian					445.2
		Sandbian					453
	Middle Ordovician	Darriwilian		458.4
	Middle Ordovician	Dapingian		467.3
	Early Ordovician	Floian		470
	Early Ordovician	Tremadocian		477.7
Cambrian	Furongian	Stage 10		485.4
		Jiangshanian		489.5
		Paibian		494
	Miaolingian	Guzhangian		Series 3 †			497
		Drumian					500.5
		Wuliuan				Stage 5 †	504.5
														509