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. 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
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			Devonian of Germany	Cambrian of North America		European Faunal Units	Cenozoic Subepochs	Cambrian of Siberia			Ordovician of the Baltic			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 †						Villanyian	Late Pliocene											2.58
		Piacenzian							Ruscinian	Late Pliocene											3.1 *
		Zanclean							Ruscinian	Early Pliocene											3.6
	Miocene	Messinian							Turolian	Late Miocene											5.333
		Tortonian							Turolian												7.246
		Tortonian							Vallesian												8.7
		Serravallian							Astaracian	Middle Miocene											11.63
		Langhian							Astaracian	Middle Miocene											13.82
		Burdigalian							Orleanian	Early Miocene											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			Wocklum/Dasberg/Hemberg/Nehden	Late Famennian	358.9
						Middle Famennian	365.3 *
						Early Famennian	368.5 *
		Frasnian			Adorf	Late Frasnian	372.2
						Middle Frasnian	375.4 *
						Early Frasnian	379.3 *
	Middle Devonian	Givetian			Givetian	Late Givetian	382.7
						Middle Givetian	383.7 *
						Early Givetian	385.9 *
		Eifelian			Eifelian	Late Eifelian	387.7
		Eifelian			Eifelian	Early Eifelian	390.3 *
	Early Devonian	Emsian			Emsian	Late Emsian	393.3
		Emsian			Emsian	Early Emsian	398.3 *
		Pragian			Siegen	Pragian	407.6
		Lochkovian			Gedinnine	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					477.7
										Stairsian					480.3 *
				Varangu						Stairsian					481.3 *
				Varangu						Skullrockian				Demingian †	482 *
				Pakerort											482.2 *
															Mansian †	483.55 *
Cambrian	Furongian	Stage 10					Franconian †/Dresbachian/Millardan				Batyrbaian		Tavgian †	Ketyan †/Yurakian			485.4
																	486.3 *
																	486.5
									Sunwaptan									487.5
		Jiangshanian																489.5
											Aksaian							490.7 *
											Sakian							492.2 *
									Steptoean									493 *
		Paibian																494
		Paibian												Ensyan †/Maduan/Nganasanian				494.7 *
	Miaolingian	Guzhangian					Series 3 †		Marjumian		Albertian †		Ayusokkanian						497
		Guzhangian											Mayan/Menevian						499.5
		Drumian											Mayan/Menevian						500.5
		Wuliuan							Stage 5 †				Topazan						Amgan/Solvan	504.5
		Wuliuan			Delamaran	506.5			Stage 5 †
	Series 2	Stage 4							Waucoban †		509
											Toyonian		Lenian †	510 *
					Dyeran						Toyonian			511 *
											Botomian			512.5 *
		Stage 3												514
					Montezuman									514.8 *
					Montezuman						Atdabanian			515.6 *
					Begadean						Atdabanian			519.9 *
	Terreneuvian	Stage 2									Tommotian			521
		Stage 2									Nemakit-Daldynian			525.5
		Fortunian									Nemakit-Daldynian		Manykaian †	529
																					538.8