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
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
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			Devonian Subages	Cambrian of China		Ten Million Year Bins	Cambrian Epochs	Cenozoic Subepochs	North American Land Mammal Ages	Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan							Cenozoic 6			Saintaugustinean	Wanganui	Haweran	0
		Meghalayan										Santarosean			0.0004
		Northgrippian													0.0042
		Greenlandian													0.0082
	Pleistocene	Late Pleistocene									Late Pleistocene				0.0117
		Late Pleistocene									Late Pleistocene	Rancholabrean			0.014
		Chibanian									Middle Pleistocene	Rancholabrean			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							Cenozoic 5		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							Cenozoic 4		Late Oligocene			Waitakian	23.03
														Duntroonian	25.2
														Whaingaroan	27.3
		Rupelian									Early Oligocene				27.82
												Whitneyan			29.5
												Orellan			31.8
	Eocene	Priabonian							Cenozoic 3		Late Eocene	Chadronian			33.9
													Arnold	Runangan	34.6
														Kaiatan	36.7
												Duchesnean			37
		Bartonian									Middle Eocene				37.71
														Bortonian	39.1
												Uintan			39.7
		Lutetian							Cenozoic 2						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							Cenozoic 1		Late Paleocene	Clarkforkian		Teurian	56
		Thanetian									Late Paleocene	Tiffanian			56.2
		Selandian									Middle Paleocene	Tiffanian			59.2
		Selandian									Middle Paleocene	Torrejonian			60.9
		Danian									Early Paleocene	Torrejonian			61.6
		Danian									Early Paleocene	Puercan			63.8
Cretaceous	Late Cretaceous	Maastrichtian		Cretaceous 8			Mata	Haumurian	66
		Campanian		Cretaceous 7				Haumurian	72.1
		Santonian		Cretaceous 6				Piripauan	83.6
		Santonian					Raukumara	Teratan	86.1
		Coniacian							86.3
		Turonian							89.8
								Mangaotanean	90.5
								Arowhanan	93.7
		Cenomanian		Cretaceous 5				Arowhanan	93.9
							Clarence	Ngaterian	95.2
								Motuan	99.5
	Early Cretaceous	Albian		Cretaceous 4				Motuan	100.5
								Urutawan	103.3
							Taitai	Korangan	108.4
		Aptian		Cretaceous 3				Korangan	113
		Aptian		Cretaceous 3					117.5
		Barremian		Cretaceous 2					121.4
		Hauterivian		Cretaceous 2					125.77
		Valanginian		Cretaceous 1					132.6
		Berriasian		Cretaceous 1					139.8
Jurassic	Late Jurassic	Tithonian		Jurassic 6					145
		Kimmeridgian		Jurassic 5					149.2
		Oxfordian							154.8
	Middle Jurassic	Callovian							161.5
		Bathonian		Jurassic 4					165.3
		Bajocian		Jurassic 4					168.2
		Aalenian		Jurassic 3					170.9
	Early Jurassic	Toarcian		Jurassic 3					174.7
		Pliensbachian		Jurassic 2					184.2
		Sinemurian		Jurassic 1					192.9
		Hettangian		Jurassic 1					199.5
Triassic	Late Triassic	Rhaetian		Triassic 4					201.4
		Norian		Triassic 4					208.5
		Carnian		Triassic 3					227
	Middle Triassic	Ladinian		Triassic 2					237
	Middle Triassic	Anisian		Triassic 2					242
	Early Triassic	Olenekian		Triassic 1					247.2
	Early Triassic	Induan		Triassic 1					251.2
Permian	Lopingian	Changhsingian		Permian 4					251.902
	Lopingian	Wuchiapingian							Longtanian †	254.14
	Guadalupian	Capitanian								259.51
		Wordian								264.28
		Roadian		Permian 3						266.9
	Cisuralian	Kungurian		Permian 2						273.01
		Artinskian								283.5
		Sakmarian								290.1
		Asselian		Permian 1						293.52
Carboniferous	Pennsylvanian	Gzhelian		Carboniferous 5						298.9
		Kasimovian		Carboniferous 5						303.7
		Moscovian		Carboniferous 4						307
		Bashkirian		Carboniferous 4						315.2
	Mississippian	Serpukhovian		Carboniferous 3						323.2
		Visean		Carboniferous 2						330.9
		Tournaisian		Carboniferous 1						346.7
Devonian	Late Devonian	Famennian		Late Famennian						Devonian 5	358.9
				Middle Famennian							365.3 *
				Early Famennian							368.5 *
		Frasnian		Late Frasnian						Devonian 4	372.2
				Middle Frasnian							375.4 *
				Early Frasnian							379.3 *
	Middle Devonian	Givetian		Late Givetian						Devonian 3	382.7
				Middle Givetian							383.7 *
				Early Givetian							385.9 *
		Eifelian		Late Eifelian							387.7
		Eifelian	Early Eifelian	390.3 *
	Early Devonian	Emsian	Late Emsian	Devonian 2	393.3
		Emsian	Early Emsian	Devonian 2	398.3 *
		Pragian	Pragian	Devonian 1	407.6
		Lochkovian	Late Lochkovian		410.8
			Middle Lochkovian		412.8 *
			Early Lochkovian		415.6 *
Silurian	Pridoli			Silurian 2	419.2
	Ludlow	Ludfordian			423
	Ludlow	Gorstian			425.6
	Wenlock	Homerian			427.4
	Wenlock	Sheinwoodian			430.5
	Llandovery	Telychian		Silurian 1	433.4
		Aeronian			438.5
		Rhuddanian			440.8
Ordovician	Late Ordovician	Hirnantian		Ordovician 5	443.8
		Katian		Ordovician 5	445.2
		Sandbian		Ordovician 4	453
	Middle Ordovician	Darriwilian		Ordovician 3	458.4
	Middle Ordovician	Dapingian		Ordovician 2	467.3
	Early Ordovician	Floian		Ordovician 2	470
	Early Ordovician	Tremadocian		Ordovician 1	477.7
Cambrian	Furongian	Stage 10		Niuchehean	Taoyuanian †	Cambrian 5	Late Cambrian	485.4
		Jiangshanian		Jiangshanian				489.5
		Paibian		Paibian				494
		Paibian		Paibian	Waergangian †/Youshuanian			494.9 *
	Miaolingian	Guzhangian		Series 3 †	Guzhangian	Wangcunian †	Cambrian 4	Middle Cambrian		497
		Drumian			Drumian	Wangcunian †	Cambrian 4			500.5
		Wuliuan			Stage 5 †	Wuliuan/Taijangian			Cambrian 3	504.5
	Series 2	Stage 4				Duyunian		Early Cambrian	Cambrian 3	509
	Series 2	Stage 3				Nangaoian			Cambrian 2	514
	Terreneuvian	Stage 2				Meishucunian			Cambrian 2	521
		Fortunian				Meishucunian			Cambrian 1	529
		Fortunian				Jinnigian			Cambrian 1	530.7
															538.8