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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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

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			Carboniferous of China	North American Land Mammal Ages	Cenozoic Subepochs	Ordovician of China			Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan					Saintaugustinean					Wanganui	Haweran	0
		Meghalayan					Santarosean							0.0004
		Northgrippian												0.0042
		Greenlandian												0.0082
	Pleistocene	Late Pleistocene						Late Pleistocene						0.0117
		Late Pleistocene					Rancholabrean	Late Pleistocene						0.014
		Chibanian					Rancholabrean	Middle Pleistocene						0.129
							Irvingtonian							0.21
													Castlecliffian	0.34
		Calabrian						Early Pleistocene						0.774
							Blancan							1.4
													Nukumaruan	1.63
		Gelasian											Nukumaruan	1.8
		Gelasian											Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †					Late Pliocene					Mangapanian	2.58
		Piacenzian						Late Pliocene					Waipipian	3
		Zanclean						Early Pliocene					Waipipian	3.6
													Opoitian	3.7
							Hemphillian						Opoitian	4.7
	Miocene	Messinian						Late Miocene				Taranaki	Kapitean	5.333
		Messinian											Tongaporutuan	7.2
		Tortonian												7.246
							Clarendonian							9.4
												Southland	Waiauan	11.04
		Serravallian						Middle Miocene						11.63
							Barstovian							12.5
													Lillburnian	13.05
		Langhian											Lillburnian	13.82
													Clifdenian	15.1
												Pareora	Altonian	15.9
		Burdigalian						Early Miocene						15.98
							Hemingfordian							16.3
							Arikareean							18.5
													Otaian	18.7
		Aquitanian											Otaian	20.44
		Aquitanian										Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian						Late Oligocene					Waitakian	23.03
													Duntroonian	25.2
													Whaingaroan	27.3
		Rupelian						Early Oligocene						27.82
							Whitneyan							29.5
							Orellan							31.8
	Eocene	Priabonian					Chadronian	Late Eocene						33.9
												Arnold	Runangan	34.6
													Kaiatan	36.7
							Duchesnean							37
		Bartonian						Middle Eocene						37.71
													Bortonian	39.1
							Uintan							39.7
		Lutetian												41.2
												Dannevirke	Porangan	42.6
													Heretaungan	45.7
							Bridgerian							46.2
		Ypresian						Early Eocene						47.8
													Mangaorapan	48.9
							Wasatchian						Mangaorapan	50.5
							Wasatchian						Waipawan	52
							Clarkforkian						Waipawan	54.9
	Paleocene	Thanetian					Clarkforkian	Late Paleocene					Teurian	56
		Thanetian					Tiffanian	Late Paleocene						56.2
		Selandian					Tiffanian	Middle Paleocene						59.2
		Selandian					Torrejonian	Middle Paleocene						60.9
		Danian					Torrejonian	Early Paleocene						61.6
		Danian					Puercan	Early Paleocene						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							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		419.2
	Ludlow	Ludfordian	423
	Ludlow	Gorstian	425.6
	Wenlock	Homerian	427.4
	Wenlock	Sheinwoodian	430.5
	Llandovery	Telychian	433.4
		Aeronian	438.5
		Rhuddanian	440.8
Ordovician	Late Ordovician	Hirnantian	Hirnantian	Xiaoxita †/Shikou	Wufeng †						443.8
		Katian	Chientangkiangian		Wufeng †						445.2
		Katian	Neichianshanian/Hanjiang								449.5
		Sandbian	Neichianshanian/Hanjiang				453
	Middle Ordovician	Darriwilian	Darriwilian	Guniu †/Hulo			458.4
		Darriwilian	Darriwilian	Hunjiang †	Dawan †/Daobaowan/Ningkuo		466.3 *
		Dapingian	Dapingian				467.3
	Early Ordovician	Floian	Yiyangian				470
		Tremadocian	Xinchangian			477.7
		Tremadocian	Xinchangian		Lianghekou †	477.9 *
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