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
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
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 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
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			Devonian of Eastern North America		Permian of North America		European Faunal Zones	Cretaceous North American Land-Mammal Ages	Silurian of the Baltic	Ordovician of North America
Quaternary	Holocene	Meghalayan																	0
		Northgrippian																	0.0042
		Greenlandian																	0.0082
	Pleistocene	Late Pleistocene																	0.0117
		Chibanian																	0.129
		Calabrian																	0.774
		Gelasian								MN 17									1.8
Neogene	Pliocene	Piacenzian	Tertiary †							MN 16									2.58
		Piacenzian								MN 15									3.2
		Zanclean								MN 15									3.6
										MN 14									4.2
										MN 13									4.9
	Miocene	Messinian								MN 13									5.333
		Tortonian								MN 12									7.246
										MN 11									7.75
										MN 10									8.7
										MN 9									9.7
										MN 7 + 8									11.1
		Serravallian								MN 7 + 8									11.63
		Serravallian								MN 6									12.8 *
		Langhian								MN 5									13.82
		Burdigalian								MN 4									15.98
										MN 3									16.9
										MN 2									20
		Aquitanian								MN 2									20.44
		Aquitanian								MN 1									22.4
Paleogene	Oligocene	Chattian																	23.03
	Oligocene	Rupelian																	27.82
	Eocene	Priabonian																	33.9
		Bartonian																	37.71
		Lutetian																	41.2
		Ypresian																	47.8
	Paleocene	Thanetian																	56
		Selandian																	59.2
		Danian																	61.6
Cretaceous	Late Cretaceous	Maastrichtian									Lancian/Edmontonian								66
		Campanian									Judithian/Aquilan								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			Capitanian	259.51
		Wordian			Wordian	264.28
		Roadian			Roadian	266.9
	Cisuralian	Kungurian			Leonardian	Cathedralian	273.01
		Kungurian				Hessian	281.9 *
		Artinskian				Hessian	283.5
		Artinskian			Wolfcampian	Lenoxian	286.1 *
		Sakmarian				Lenoxian	290.1
		Asselian				Nealian	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					Conewangan/Conneautan/Canadaway	358.9
	Late Devonian	Frasnian					West Fallsian/Sonyean	372.2
	Middle Devonian	Givetian					Geneseean/Taghanican/Tioughniogan	Cazenovian	382.7
	Middle Devonian	Eifelian					Southwoodian	Cazenovian	387.7
	Early Devonian	Emsian					Sawkillian/Deer Parkian	Helderbergian	393.3
		Pragian							407.6
		Lochkovian							410.8
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	433.4						Jaani
		Telychian	Adavere						434 *
		Aeronian	Adavere						438.5
		Aeronian	Raikkula						439.4 *
		Rhuddanian	Raikkula						440.8
		Rhuddanian	Juuru						441.4 *
Ordovician	Late Ordovician	Hirnantian							Cincinnatian	Gamachian	Harju	Porkuni	443.8
		Katian								Gamachian		Pirgu	445.2
										Richmondian		Pirgu	446 *
										Richmondian		Vormsi	449.6 *
										Maysvillian		Vormsi	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
										Maysvillian		Nabala		Johvi †	450 *
										Edenian		Nabala			450.4 *
										Edenian	Viru	Rakvere			450.6 *
									Mohawkian	Chatfieldian		Rakvere			451.1 *
												Oandu			452 *
		Sandbian										Keila		Idavere †	453
										Turinian		Keila			453.7 *
												Haljala			453.9
												Kukruse			456.4 *
									Whiterockian			Kukruse	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 *
										Rangerian		Billingen					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 *
										Stairsian		Varangu				481.3 *
										Skullrockian		Varangu				Demingian †	482 *
												Pakerort				Demingian †	482.2 *
Cambrian	Furongian	Stage 10										Pakerort					485.4
						486.3 *
											486.5
											487.5
		Jiangshanian									489.5
		Paibian									494
	Miaolingian	Guzhangian									Series 3 †	497
		Drumian										500.5
		Wuliuan										Stage 5 †					504.5
	Series 2	Stage 4															509
	Series 2	Stage 3															514
	Terreneuvian	Stage 2															521
	Terreneuvian	Fortunian															529
																			538.8