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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cenozoic 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				Late Pleistocene										Lujanian		0.0117
		Chibanian				Middle Pleistocene										Lujanian		0.129
		Chibanian				Middle Pleistocene										Ensenadan		0.3 *
		Calabrian				Early Pleistocene										Ensenadan		0.774
		Calabrian														Sanandresian	Uquian †	1.7 *
		Gelasian														Sanandresian		1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Late Pliocene										Vorohuean		2.58
		Piacenzian				Late Pliocene										Chapadmalalan		2.9 *
		Zanclean				Early Pliocene										Chapadmalalan		3.6
																Montehermosan		3.7 *
																Huayquerian		4.9 *
	Miocene	Messinian				Late Miocene												5.333
		Tortonian							Pannonian									7.246
																Chasicoan		7.9 *
																Mayoan		9.9 *
																Laventan		10.9 *
		Serravallian				Middle Miocene			Sarmatian									11.63
									Badenian									12.8 *
									Badenian							Colloncuran		13.7 *
		Langhian														Colloncuran		13.82
		Langhian														Friasian		15.4 *
		Burdigalian				Early Miocene										Friasian		15.98
																Santacrucian		16.2 *
																Colhuehuapian		17.4 *
		Aquitanian														Colhuehuapian		20.44
		Aquitanian														Deseadan		20.9 *
Paleogene	Oligocene	Chattian				Late Oligocene												23.03
		Rupelian				Early Oligocene												27.82
		Rupelian				Early Oligocene										Tinguirirican		28.9 *
	Eocene	Priabonian				Late Eocene										Tinguirirican		33.9
		Priabonian				Late Eocene										Divisaderan		35.9 *
		Bartonian				Middle Eocene												37.71
		Lutetian																41.2
		Lutetian														Mustersan		41.9 *
		Ypresian				Early Eocene										Mustersan		47.8
		Ypresian				Early Eocene										Casamayoran		47.9 *
	Paleocene	Thanetian				Late Paleocene										Riochican		56
																Itaboraian		56.9 *
																Peligran		58.9 *
		Selandian				Middle Paleocene												59.2
		Danian				Early Paleocene												61.6
		Danian				Early Paleocene										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					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						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