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
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
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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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			Cambrian of Kazakhstan	Cambrian of China		Carboniferous Subepochs	South American Land Mammal Ages		Central Paratethys Stages	Ordovician of the Baltic				Devonian Subages	Silurian of the Baltic	Ordovician of North America
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 *
										Colloncuran		Badenian								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		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			Late Pennsylvanian	298.9
		Kasimovian			Late Pennsylvanian	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				Late Famennian	358.9
						Middle Famennian	365.3 *
						Early Famennian	368.5 *
		Frasnian				Late Frasnian	372.2
						Middle Frasnian	375.4 *
						Early Frasnian	379.3 *
	Middle Devonian	Givetian				Late Givetian	382.7
						Middle Givetian	383.7 *
						Early Givetian	385.9 *
		Eifelian				Late Eifelian	387.7
		Eifelian				Early Eifelian	390.3 *
	Early Devonian	Emsian				Late Emsian	393.3
		Emsian				Early Emsian	398.3 *
		Pragian				Pragian	407.6
		Lochkovian				Late Lochkovian	410.8
						Middle Lochkovian	412.8 *
						Early Lochkovian	415.6 *
Silurian	Pridoli						Ohesaare	419.2
	Pridoli		Kaugetuma				421.7 *
	Ludlow	Ludfordian	Kuressaare				423
		Ludfordian	Paadla				423.4 *
		Gorstian	Paadla				425.6
	Wenlock	Homerian	Rootsikula				427.4
		Homerian	Jaagarahu				429.2 *
		Sheinwoodian	Jaagarahu				430.5
		Sheinwoodian	Jaani				431.8 *
	Llandovery	Telychian	Jaani				433.4
		Telychian	Adavere				434 *
		Aeronian	Adavere				438.5
		Aeronian	Raikkula				439.4 *
		Rhuddanian	Raikkula				440.8
		Rhuddanian	Juuru				441.4 *
Ordovician	Late Ordovician	Hirnantian	Harju				Porkuni		Cincinnatian	Gamachian	443.8
		Katian					Pirgu			Gamachian	445.2
							Pirgu			Richmondian	446 *
							Vormsi			Richmondian	449.6 *
							Vormsi			Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
							Nabala			Maysvillian		Johvi †	450 *
							Nabala			Edenian			450.4 *
			Viru				Rakvere			Edenian			450.6 *
							Rakvere		Mohawkian	Chatfieldian			451.1 *
							Oandu						452 *
		Sandbian					Keila					Idavere †	453
							Keila			Turinian			453.7 *
							Haljala						453.9
							Kukruse						456.4 *
							Kukruse		Whiterockian		Canadian †		Chazyan †/Marmor	457 *
							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												467.3
										Rangerian				469.1 *
				Billingen						Rangerian				469.3 *
	Early Ordovician	Floian							Ibexian	Blackhillsian			Jeffersonian †	Cassinian †	470
							Latorp †								470.1 *
				Hunneberg											473.7 *
										Tulean					473.9 *
		Tremadocian								Tulean					Ungurian	477.7
										Stairsian						480.3 *
				Varangu						Stairsian						481.3 *
				Varangu	Skullrockian					Demingian †				482 *
				Pakerort						Demingian †				482.2 *
Cambrian	Furongian	Stage 10		Pakerort			Batyrbaian			Niuchehean	Taoyuanian †						485.4
																	486.3 *
																	486.5
																	487.5
		Jiangshanian								Jiangshanian							489.5
							Aksaian										490.7 *
							Sakian										492.2 *
		Paibian								Paibian							494
		Paibian								Paibian	Waergangian †/Youshuanian						494.9 *
	Miaolingian	Guzhangian					Series 3 †			Ayusokkanian	Guzhangian						Wangcunian †	497
		Guzhangian									Guzhangian							499.5
		Drumian								Zhanaarykian	Drumian							500.5
		Drumian								Tuesaian	Drumian							503
		Wuliuan								Tuesaian	Stage 5 †						Wuliuan/Taijangian		504.5
		Wuliuan									Stage 5 †						Wuliuan/Taijangian		505.3
	Series 2	Stage 4									Duyunian						509
										Toyonian							510 *
										Botomian							512.5 *
		Stage 3								Botomian	Nangaoian						514
		Stage 3								Atdabanian	Nangaoian						515.6 *
	Terreneuvian	Stage 2								Tommotian	Meishucunian						521
		Stage 2															525.5
		Fortunian															529
		Fortunian									Jinnigian						530.7
																				538.8