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
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
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
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) 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			Cretaceous North American Land-Mammal Ages	Carboniferous of China	Devonian of France	Carboniferous of Western Europe		Devonian of Eastern North America		Permian of the Pamirs	Permian-Jurassic of New Zealand
Neogene	Pliocene	Piacenzian	Tertiary †													2.58
	Pliocene	Zanclean														3.6
	Miocene	Messinian														5.333
		Tortonian														7.246
		Serravallian														11.63
		Langhian														13.82
		Burdigalian														15.98
		Aquitanian														20.44
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												Oteke	Puaroan	145
		Kimmeridgian												Oteke	Puaroan	149.2
														Kawhia	Ohauan	150
															Heterian	154.5
		Oxfordian														154.8
	Middle Jurassic	Callovian														161.5
		Callovian													Temaikan	164.3
		Bathonian														165.3
		Bajocian														168.2
		Aalenian														170.9
	Early Jurassic	Toarcian														174.7
		Toarcian												Herangi	Ururoan	176
		Pliensbachian													Ururoan	184.2
		Pliensbachian													Aratauran	188.9
		Sinemurian														192.9
		Hettangian														199.5
Triassic	Late Triassic	Rhaetian												Balfour	Otapirian	201.4
		Norian													Warepan	208.5
															Otamitan	217
															Oretian	221
		Carnian													Oretian	227
		Carnian												Gore	Kaihikuan	227.5
	Middle Triassic	Ladinian													Kaihikuan	237
		Ladinian													Etalian	238
		Anisian													Etalian	242
		Anisian													Malakovian	246
	Early Triassic	Olenekian													Malakovian	247.2
		Olenekian													Nelsonian	249
		Induan													Nelsonian	251.2
		Induan												DUrville	Makarewan	251.5
Permian	Lopingian	Changhsingian											Dorashamian		Makarewan	251.902
		Changhsingian											Dorashamian		Waiitian	253.2
		Wuchiapingian		Longtanian †									Dzhulfian		Waiitian	254.14
		Wuchiapingian		Longtanian †									Dzhulfian		Puruhauan	254.2
	Guadalupian	Capitanian											Midian	Aparima	Flettian	259.51
		Wordian			264.28										Flettian
					Barettian		266
							Murgabian	266.2 *
		Roadian					Murgabian	266.9
	Cisuralian	Kungurian					Kubergandian	273.01
					Mangapirian		Kubergandian	276
							Bolorian	279.8
		Artinskian						283.5
					Telfordian			285
					Telfordian		Yakhtashian	286
							Yakhtashian		288.5
		Sakmarian					Sakmarian		290.1
		Asselian					Asselian		293.52
		Asselian					Asselian		Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian								298.9
										Xiaodushanian	300 *
									Stephanian		Stephanian C	300.3 *
			Stephanian B								300.9 *
			Stephanian A								301.4 *
		Kasimovian	Stephanian A			303.7
			Cantabrian			305 *
						Dalaun				305.8 *
		Moscovian								307
			Westphalian						Westphalian D	307.4 *
									Westphalian C	309.8
									Westphalian B	314.6
		Bashkirian							Westphalian B	315.2
									Westphalian A	317 *
						Huashibanian			Westphalian A	318.5 *
			Namurian						Yeadonian	318.8 *
									Marsdenian	320.2 *
						Lousuan			Marsdenian	321.2 *
									Kinderscoutian	321.5 *
									Alportian	322 *
									Chokierian	323.1 *
	Mississippian	Serpukhovian				Dewunian			Chokierian	323.2
									Arnsbergian	324 *
									Pendleian	327.4 *
						Shangsian			Pendleian	330.8 *
		Visean	Warnantian			Shangsian			Brigantian †	330.9
			Warnantian			Jiusian			Brigantian †	335 *
			Livian						Asbian †	336.3 *
			Moliniacian						Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian	Tangbagouan			Ivorian				346.7
		Tournaisian	Tangbagouan			Hastarian				353.7 *
Devonian	Late Devonian	Famennian				Famennian					Conewangan/Conneautan/Canadaway	Late Famennian	358.9
												Middle Famennian	365.3 *
												Early Famennian	368.5 *
		Frasnian				Frasnian					West Fallsian/Sonyean	Late Frasnian	372.2
												Middle Frasnian	375.4 *
												Early Frasnian	379.3 *
	Middle Devonian	Givetian				Givetian					Geneseean/Taghanican/Tioughniogan	Cazenovian	Late Givetian	382.7
													Middle Givetian	383.7 *
													Early Givetian	385.9 *
		Eifelian				Couvinien					Southwoodian		Late Eifelian	387.7
		Eifelian									Southwoodian		Early Eifelian	390.3 *
	Early Devonian	Emsian									Sawkillian/Deer Parkian	Helderbergian	Late Emsian	393.3
		Emsian									Sawkillian/Deer Parkian		Early Emsian	398.3 *
		Pragian											Pragian	407.6
		Pragian				Coblencien							Pragian	408.2 *
		Lochkovian				Gedinnine							Late Lochkovian	410.8
													Middle Lochkovian	412.8 *
													Early Lochkovian	415.6 *
Silurian	Pridoli												419.2
	Ludlow	Ludfordian											423
	Ludlow	Gorstian											425.6
	Wenlock	Homerian											427.4
	Wenlock	Sheinwoodian											430.5
	Llandovery	Telychian											433.4
		Aeronian											438.5
		Rhuddanian											440.8
Ordovician	Late Ordovician	Hirnantian											443.8
		Katian											445.2
		Sandbian											453
	Middle Ordovician	Darriwilian			458.4
	Middle Ordovician	Dapingian			467.3
	Early Ordovician	Floian			470
	Early Ordovician	Tremadocian			477.7
Cambrian	Furongian	Stage 10			Franconian †/Dresbachian/Millardan		485.4
		Stage 10					Sunwaptan	487.5
		Jiangshanian					Sunwaptan	489.5
		Jiangshanian					Steptoean	493 *
		Paibian					Steptoean	494
	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