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
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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
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			Permian of North America		Cambrian of North America		Central Paratethys Stages	Permian of Western Europe	Permian of China	Silurian of the Baltic	Silurian of North America			South American Land Mammal Ages
Quaternary	Pleistocene	Late Pleistocene															Lujanian		0.0117
		Chibanian															Lujanian		0.129
		Chibanian															Ensenadan		0.3 *
		Calabrian															Ensenadan		0.774
		Calabrian															Sanandresian	Uquian †	1.7 *
		Gelasian															Sanandresian		1.8
Neogene	Pliocene	Piacenzian	Tertiary †														Vorohuean		2.58
		Piacenzian															Chapadmalalan		2.9 *
		Zanclean															Chapadmalalan		3.6
																	Montehermosan		3.7 *
																	Huayquerian		4.9 *
	Miocene	Messinian																	5.333
		Tortonian								Pannonian									7.246
																	Chasicoan		7.9 *
																	Mayoan		9.9 *
																	Laventan		10.9 *
		Serravallian								Sarmatian									11.63
										Badenian									12.8 *
										Badenian							Colloncuran		13.7 *
		Langhian															Colloncuran		13.82
		Langhian															Friasian		15.4 *
		Burdigalian															Friasian		15.98
																	Santacrucian		16.2 *
																	Colhuehuapian		17.4 *
		Aquitanian															Colhuehuapian		20.44
		Aquitanian															Deseadan		20.9 *
Paleogene	Oligocene	Chattian																	23.03
		Rupelian																	27.82
		Rupelian															Tinguirirican		28.9 *
	Eocene	Priabonian															Tinguirirican		33.9
		Priabonian															Divisaderan		35.9 *
		Bartonian																	37.71
		Lutetian																	41.2
		Lutetian															Mustersan		41.9 *
		Ypresian															Mustersan		47.8
		Ypresian															Casamayoran		47.9 *
	Paleocene	Thanetian															Riochican		56
																	Itaboraian		56.9 *
																	Peligran		58.9 *
		Selandian																	59.2
		Danian																	61.6
		Danian															Tiupampan		62.4 *
Cretaceous	Late Cretaceous	Maastrichtian																	66
		Campanian																	72.1
		Santonian																	83.6
		Coniacian																	86.3
		Turonian																	89.8
		Cenomanian																	93.9
	Early Cretaceous	Albian																	100.5
		Aptian																	113
		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		Meishanian	251.902
		Changhsingian		Baoqingian	253.4 *
		Wuchiapingian		Longtanian †	Zechstein	Laoshanian	254.14
		Wuchiapingian		Longtanian †	Zechstein	Laibinian	257.7 *
	Guadalupian	Capitanian			Capitanian	Rotliegendes	Lengwuan	259.51
		Wordian			Wordian		Kuhfengian	264.28
		Roadian			Roadian		Kuhfengian	266.9
	Cisuralian	Kungurian			Leonardian		Cathedralian	Luodianian	273.01
		Kungurian					Hessian		281.9 *
		Artinskian				Autunian			283.5
								Longlinian	285.4 *
					Wolfcampian		Lenoxian		286.1 *
		Sakmarian					Lenoxian		290.1
		Asselian					Nealian	Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian						Zisongian	298.9
		Gzhelian							300.1
		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	Cayugan	419.2
									Kaugetuma	Cayugan	421.7 *
									Kaugetuma	Niagaran	422.5 *
	Ludlow	Ludfordian							Kuressaare		423
		Ludfordian							Paadla		423.4 *
		Gorstian	425.6						Paadla
	Wenlock	Homerian	Rootsikula						Lockportian		427.4
		Homerian	Jaagarahu						Lockportian		429.2 *
		Sheinwoodian	Jaagarahu								430.5
		Sheinwoodian	Jaani								431.8 *
	Llandovery	Telychian	Jaani						Ontarian		433.4
		Telychian	Adavere								434 *
		Aeronian									438.5
											Alexandrian	438.7 *
			Raikkula									439.4 *
									Medinan	Clinton		440.1 *
												440.7 *
		Rhuddanian										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									Franconian †/Dresbachian/Millardan			485.4
																486.3 *
																486.5
																Sunwaptan	487.5
		Jiangshanian														Sunwaptan	489.5
		Jiangshanian														Steptoean	493 *
		Paibian			494											Steptoean
	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