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. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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			Carboniferous Subepochs	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			Rotliegendes	Lengwuan	259.51
		Wordian				Kuhfengian	264.28
		Roadian				Kuhfengian	266.9
	Cisuralian	Kungurian				Luodianian	273.01
		Artinskian			Autunian	Luodianian	283.5
		Artinskian				Longlinian	285.4 *
		Sakmarian				Longlinian	290.1
		Asselian				Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian			Late Pennsylvanian	Zisongian		298.9
		Gzhelian						300.1
		Kasimovian						303.7
		Moscovian			Middle Pennsylvanian			307
		Bashkirian			Early Pennsylvanian			315.2
	Mississippian	Serpukhovian			Late Mississippian			323.2
		Visean			Middle Mississippian			330.9
		Tournaisian			Early Mississippian			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						Paadla		425.6
	Wenlock	Homerian						Rootsikula		Lockportian	427.4
		Homerian	Jaagarahu					429.2 *		Lockportian
		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