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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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			Cretaceous-Cenozoic of New Zealand		Silurian of the Baltic	Cambrian Epochs	North American Land Mammal Ages	Silurian Ages of Europe	Ordovician of the Baltic
Quaternary	Holocene	Meghalayan				Wanganui	Haweran			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
										Irvingtonian			0.21
							Castlecliffian						0.34
		Calabrian											0.774
										Blancan			1.4
							Nukumaruan						1.63
		Gelasian					Nukumaruan						1.8
		Gelasian					Mangapanian						2.4
Neogene	Pliocene	Piacenzian	Tertiary †				Mangapanian						2.58
		Piacenzian					Waipipian						3
		Zanclean					Waipipian						3.6
							Opoitian						3.7
							Opoitian			Hemphillian			4.7
	Miocene	Messinian				Taranaki	Kapitean						5.333
		Messinian					Tongaporutuan						7.2
		Tortonian											7.246
										Clarendonian			9.4
						Southland	Waiauan						11.04
		Serravallian											11.63
										Barstovian			12.5
							Lillburnian						13.05
		Langhian					Lillburnian						13.82
							Clifdenian						15.1
						Pareora	Altonian						15.9
		Burdigalian											15.98
										Hemingfordian			16.3
										Arikareean			18.5
							Otaian						18.7
		Aquitanian					Otaian						20.44
		Aquitanian				Landon	Waitakian						21.7
Paleogene	Oligocene	Chattian					Waitakian						23.03
							Duntroonian						25.2
							Whaingaroan						27.3
		Rupelian											27.82
										Whitneyan			29.5
										Orellan			31.8
	Eocene	Priabonian								Chadronian			33.9
						Arnold	Runangan						34.6
							Kaiatan						36.7
										Duchesnean			37
		Bartonian											37.71
							Bortonian						39.1
										Uintan			39.7
		Lutetian											41.2
						Dannevirke	Porangan						42.6
							Heretaungan						45.7
										Bridgerian			46.2
		Ypresian											47.8
							Mangaorapan						48.9
							Mangaorapan			Wasatchian			50.5
							Waipawan			Wasatchian			52
							Waipawan			Clarkforkian			54.9
	Paleocene	Thanetian					Teurian			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		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
		Kasimovian						303.7
		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			Gleedonian		427.4
			Jaagarahu			Gleedonian		429.2 *
						Whitwellian		429.7 *
		Sheinwoodian						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						Harju	Porkuni	443.8
		Katian							Pirgu	445.2
					Vormsi				449.6 *
					Nabala				Johvi †	450 *
					Viru			Rakvere		450.6 *
								Oandu		452 *
		Sandbian						Keila	Idavere †	453
				Haljala				453.9
				Kukruse				456.4 *
				Uhaku				Aluoja †	457.5 *
	Middle Ordovician	Darriwilian		Uhaku					458.4
				Lasnamagi					458.9 *
				Aseri					460.4 *
				Oeland	Kunda				462.9 *
					Kunda			Valaste †/Hunderum	464.3 *
					Volkhov				Langevoja †/Vaana/Saka	467.1 *
		Dapingian			Volkhov					467.3
		Dapingian			Billingen					469.3 *
	Early Ordovician	Floian								470
								Latorp †		470.1 *
					Hunneberg					473.7 *
		Tremadocian			Hunneberg					477.7
					Varangu					481.3 *
					Pakerort					482.2 *
Cambrian	Furongian	Stage 10			Pakerort			Late Cambrian			485.4
											486.3 *
											486.5
		Jiangshanian					489.5
		Paibian					494
	Miaolingian	Guzhangian					Series 3 †	Middle Cambrian			497
		Drumian									500.5
		Wuliuan									Stage 5 †	504.5
	Series 2	Stage 4									Early Cambrian	509
	Series 2	Stage 3										514
	Terreneuvian	Stage 2										521
	Terreneuvian	Fortunian										529
													538.8