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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. J. Prevosti, C. O. Romano, A. M. Forasiepi, S. Hemming, R. Bonini, A. M. Candela, E. Cerdeño, M. C. Madozzo Jaén, P. E. Ortiz, F. Pujos, L. Rasia, G. I. Schmidt, M. Taglioretti, R. D. E. MacPhee, and U. F. J. Pardiñas. 2021. New radiometric 40Ar–39Ar dates and faunistic analyses refine evolutionary dynamics of Neogene vertebrate assemblages in southern South America. Scientific Reports 2021(11):9830 view
J. J. Flynn and C. C. Swisher, III. 1995. Cenozoic South American Land Mammal Ages: correlation to global geochronology. Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication 54:317-333 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
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 Subepochs	Silurian of North America			South American Land Mammal Ages		Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan										Wanganui	Haweran	0
		Northgrippian												0.0042
		Greenlandian												0.0082
	Pleistocene	Late Pleistocene								Lujanian				0.0117
		Chibanian								Lujanian				0.129
										Ensenadan				0.3 *
													Castlecliffian	0.34
		Calabrian											Castlecliffian	0.774
													Nukumaruan	1.63
										Sanandresian	Uquian †			1.7 *
		Gelasian												1.8
		Gelasian											Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †							Vorohuean				2.58
										Chapadmalalan				2.9 *
													Waipipian	3
		Zanclean											Waipipian	3.6
										Montehermosan			Opoitian	3.7 *
										Huayquerian			Opoitian	4.9 *
	Miocene	Messinian										Taranaki	Kapitean	5.333
		Messinian											Tongaporutuan	7.2
		Tortonian												7.246
										Chasicoan				7.9 *
										Mayoan				9.9 *
										Laventan				10.9 *
												Southland	Waiauan	11.04
		Serravallian											Waiauan	11.63
													Lillburnian	13.05
										Colloncuran				13.7 *
		Langhian												13.82
													Clifdenian	15.1
										Friasian			Clifdenian	15.4 *
												Pareora	Altonian	15.9
		Burdigalian												15.98
										Santacrucian				16.2 *
										Colhuehuapian				17.4 *
													Otaian	18.7
		Aquitanian												20.44
										Deseadan				20.9 *
												Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian											Waitakian	23.03
													Duntroonian	25.2
													Whaingaroan	27.3
		Rupelian												27.82
		Rupelian								Tinguirirican				28.9 *
	Eocene	Priabonian												33.9
												Arnold	Runangan	34.6
										Divisaderan			Runangan	35.9 *
													Kaiatan	36.7
		Bartonian											Kaiatan	37.71
		Bartonian											Bortonian	39.1
		Lutetian												41.2
										Mustersan				41.9 *
												Dannevirke	Porangan	42.6
													Heretaungan	45.7
		Ypresian												47.8
										Casamayoran				47.9 *
													Mangaorapan	48.9
													Waipawan	52
	Paleocene	Thanetian								Riochican			Teurian	56
										Itaboraian				56.9 *
										Peligran				58.9 *
		Selandian												59.2
		Danian												61.6
		Danian								Tiupampan				62.4 *
Cretaceous	Late Cretaceous	Maastrichtian		Senonian		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		Gallic			Motuan	100.5
							Urutawan	103.3
						Taitai	Korangan	108.4
		Aptian					Korangan	113
		Aptian						117.5
		Barremian						121.4
		Hauterivian		Neocomian				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						Dorashamian	251.902
	Lopingian	Wuchiapingian						Longtanian †	Dzhulfian	254.14
	Guadalupian	Capitanian							Midian	259.51
		Wordian							Midian	264.28
		Wordian							Murgabian	266.2 *
		Roadian							Murgabian	266.9
	Cisuralian	Kungurian							Kubergandian	273.01
		Kungurian							Bolorian	279.8
		Artinskian							Bolorian	283.5
		Artinskian							Yakhtashian	286
		Sakmarian							Sakmarian	290.1
		Asselian							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		Cayugan		419.2
	Pridoli		Niagaran		422.5 *
	Ludlow	Ludfordian			423
	Ludlow	Gorstian			425.6
	Wenlock	Homerian			Lockportian					427.4
	Wenlock	Sheinwoodian								430.5
	Llandovery	Telychian			Ontarian					433.4
		Aeronian								438.5
										Alexandrian	438.7 *
			Medinan		Clinton						440.1 *
											440.7 *
		Rhuddanian									440.8
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 *
						Valaste †/Hunderum	Kunda				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					485.4
												486.3 *
												486.5
		Jiangshanian										489.5
		Paibian						494
	Miaolingian	Guzhangian						Series 3 †				497
		Drumian										500.5
		Wuliuan										Stage 5 †	504.5
														509