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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) view
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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			Ordovician of Britain				Cenozoic Subepochs	European Faunal Units	Cambrian of Siberia			Ordovician of the Baltic				Devonian Subages	Silurian of the Baltic	Ordovician of North America
Quaternary	Pleistocene	Late Pleistocene								Late Pleistocene													0.0117
		Chibanian								Middle Pleistocene													0.129
		Calabrian								Early Pleistocene													0.774
		Gelasian								Early Pleistocene													1.8
Neogene	Pliocene	Piacenzian	Tertiary †							Late Pliocene	Villanyian												2.58
		Piacenzian								Late Pliocene	Ruscinian												3.1 *
		Zanclean								Early Pliocene	Ruscinian												3.6
	Miocene	Messinian								Late Miocene	Turolian												5.333
		Tortonian									Turolian												7.246
		Tortonian									Vallesian												8.7
		Serravallian								Middle Miocene	Astaracian												11.63
		Langhian								Middle Miocene	Astaracian												13.82
		Burdigalian								Early Miocene	Orleanian												15.98
		Burdigalian									Agenian												20
		Aquitanian									Agenian												20.44
Paleogene	Oligocene	Chattian								Late Oligocene													23.03
	Oligocene	Rupelian								Early Oligocene													27.82
	Eocene	Priabonian								Late Eocene													33.9
		Bartonian								Middle Eocene													37.71
		Lutetian								Middle Eocene													41.2
		Ypresian								Early Eocene													47.8
	Paleocene	Thanetian								Late Paleocene													56
		Selandian								Middle Paleocene													59.2
		Danian								Early Paleocene													61.6
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																					298.9
		Kasimovian			303.7
		Moscovian			307
		Bashkirian			315.2
	Mississippian	Serpukhovian			323.2
		Visean			330.9
		Tournaisian			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	Ashgill			Hirnantian	Harju	Porkuni		Cincinnatian	Gamachian	443.8
		Katian				Rawtheyan		Pirgu			Gamachian	445.2
						Rawtheyan					Richmondian	446 *
						Cautleyan						448.9 *
						Pusgillian						449.3 *
			Caradoc			Streffordian		Onnian †				Vormsi	449.6 *
											Maysvillian	Vormsi	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
											Maysvillian	Nabala		Johvi †	450 *
											Edenian	Nabala			450.4 *
							Viru				Edenian	Rakvere			450.6 *
										Mohawkian	Chatfieldian				451.1 *
						Cheneyan									451.5 *
						Cheneyan						Oandu			452 *
						Burrellian						Oandu			452.7 *
		Sandbian										Keila		Idavere †	453
								Actonian †							453.2 *
											Turinian				453.7 *
												Haljala			453.9
				Marshbrookian †				Woolstonian †							454.2 *
				Longvillian †											455.2 *
												Kukruse			456.4 *
						Aurelucian									456.8 *
										Whiterockian			Canadian †		Chazyan †/Marmor	457 *
				Soudleyan †/Harnagian/Costonian												457.4 *
				Soudleyan †/Harnagian/Costonian								Uhaku		Aluoja †		457.5 *
	Middle Ordovician	Darriwilian	Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn								Uhaku				458.4
												Lasnamagi				458.9 *
												Aseri				460.4 *
				Abereiddian/Early Llanvirn								Aseri				461.3 *
							Oeland					Kunda				462.9 *
												Kunda		Valaste †/Hunderum		464.3 *
												Volkhov				Langevoja †/Vaana/Saka	467.1 *
		Dapingian															467.3
			Arenig	Fennian													468.4 *
											Rangerian						469.1 *
											Rangerian	Billingen					469.3 *
	Early Ordovician	Floian								Ibexian	Blackhillsian				Jeffersonian †		Cassinian †	470
														Latorp †				470.1 *
				Whitlandian														471.1 *
												Hunneberg						473.7 *
											Tulean							473.9 *
				Moridunian														474.3 *
		Tremadocian	Tremadoc	Migneintian														477.7
				Migneintian							Stairsian							480.3 *
				Cressagian														480.8 *
												Varangu						481.3 *
											Skullrockian	Varangu					Demingian †	482 *
												Pakerort						482.2 *
																		Mansian †	483.55 *
					485 *													Mansian †
Cambrian	Furongian	Stage 10			Batyrbaian								Tavgian †	Ketyan †/Yurakian						485.4
																				486.3 *
																				486.5
																				487.5
		Jiangshanian																		489.5
					Aksaian															490.7 *
					Sakian															492.2 *
		Paibian																		494
		Paibian												Ensyan †/Maduan/Nganasanian						494.7 *
	Miaolingian	Guzhangian			Series 3 †								Ayusokkanian								497
		Guzhangian											Mayan/Menevian								499.5
		Drumian											Mayan/Menevian								500.5
		Wuliuan											Stage 5 †								Amgan/Solvan	504.5
	Series 2	Stage 4																			Amgan/Solvan	509
									Toyonian					Lenian †							510 *
									Botomian												512.5 *
		Stage 3							Botomian												514
		Stage 3							Atdabanian												515.6 *
	Terreneuvian	Stage 2							Tommotian												521
		Stage 2							Nemakit-Daldynian												525.5
		Fortunian							Nemakit-Daldynian					Manykaian †							529
																							538.8