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
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, 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
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			North American Land Mammal Ages	Cambrian of North America		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									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
						Hemphillian				Opoitian	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
						Wasatchian				Mangaorapan	50.5
						Wasatchian				Waipawan	52
						Clarkforkian				Waipawan	54.9
	Paleocene	Thanetian				Clarkforkian				Teurian	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
		Gzhelian						Xiaodushanian	300 *
		Kasimovian						Xiaodushanian	303.7
		Kasimovian						Dalaun	305.8 *
		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	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	Franconian †/Dresbachian/Millardan	485.4
		Stage 10		Sunwaptan		487.5
		Jiangshanian		Sunwaptan	489.5
		Jiangshanian		Steptoean	493 *
		Paibian		Steptoean	494
	Miaolingian	Guzhangian	Series 3 †	Marjumian	Albertian †	497
		Drumian		Marjumian		500.5
		Wuliuan		Stage 5 †		Topazan	504.5
		Wuliuan		Stage 5 †		Delamaran	506.5
	Series 2	Stage 4			Waucoban †	Delamaran	509
		Stage 4				Dyeran	511 *
		Stage 3				Dyeran	514
						Montezuman	514.8 *
						Begadean	519.9 *
	Terreneuvian	Stage 2					521
	Terreneuvian	Fortunian					529
											538.8