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
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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			Ordovician of Australia	Devonian of Eastern North America		Carboniferous of China	Ammonite Chrons of North America			Silurian Ages of Europe	Devonian of Czechoslovakia	Cambrian of Australia	Paleogene Mammal Ages of Asia		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														Tabenbulakian	Hsandagolian			23.03
	Oligocene	Rupelian														Kekeamuan	Hsandagolian			27.82
	Eocene	Priabonian														Houldjinian/Ergilian/Ulangochuian				33.9
		Bartonian														Sharamurunian/Irdinmanhan/Arshantan				37.71
		Lutetian																		41.2
		Ypresian															Bumbanian			47.8
	Paleocene	Thanetian														Gashatan				56
		Selandian																		59.2
		Danian																		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																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								Epizigzagiceras										168.2
		Bajocian								Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense										168.4
		Aalenian								Howelli/Scissum/Westermanni										170.9
	Early Jurassic	Toarcian								Yakounensis/Hillebrandti/Crassicosta										174.7
										Yakounensis/Hillebrandti/Crassicosta								Herangi	Ururoan	176
										Planulata										179.3 *
										Planulata		Arnioceras arnouldi								179.8 *
										Kanense										181.3 *
										Carlottense										182.3 *
										Kunae										183.5 *
		Pliensbachian								Kunae										184.2
										Freboldi										185.1 *
										Whiteavesi/Imlayi	Tetraspidoceras									186.2 *
										Whiteavesi/Imlayi									Aratauran	188.9
																				189.2 *
										Plesechioceras harbledownense/Asteroceras varians/Coroniceras	Canadensis									190.3 *
		Sinemurian																		192.9
										Pseudaetomoceras		Psiloceras								196.4 *
										Franziceras/Euphyllites										196.5 *
		Hettangian								Franziceras/Euphyllites										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			Makarewan	251.902
		Changhsingian			Waiitian	253.2
		Wuchiapingian			Waiitian	Longtanian †	254.14
		Wuchiapingian			Puruhauan	Longtanian †	254.2
	Guadalupian	Capitanian			Aparima	Flettian	259.51
		Wordian				Flettian	264.28
		Wordian				Barettian	266
		Roadian					266.9
	Cisuralian	Kungurian					273.01
		Kungurian				Mangapirian	276
		Artinskian	283.5			Mangapirian
			Telfordian			285
						288.5
		Sakmarian				290.1
		Asselian				293.52
Carboniferous	Pennsylvanian	Gzhelian				298.9
		Gzhelian				Xiaodushanian	300 *
		Kasimovian				Xiaodushanian	303.7
		Kasimovian				Dalaun	305.8 *
		Moscovian					307
		Bashkirian					315.2
						Huashibanian	318.5 *
						Lousuan	321.2 *
	Mississippian	Serpukhovian				Dewunian	323.2
		Serpukhovian				Shangsian	330.8 *
		Visean				Shangsian	330.9
		Visean				Jiusian	335 *
		Tournaisian				Tangbagouan	346.7
Devonian	Late Devonian	Famennian				Conewangan/Conneautan/Canadaway		Famennian	358.9
	Late Devonian	Frasnian				West Fallsian/Sonyean		Frasnian	372.2
	Middle Devonian	Givetian				Geneseean/Taghanican/Tioughniogan		Cazenovian	Srbsko				Givetian	382.7
	Middle Devonian	Eifelian				Southwoodian		Cazenovian	Chotec				Couvinien	387.7
	Early Devonian	Emsian				Sawkillian/Deer Parkian		Helderbergian	Daleje/Zlichovian					393.3
		Pragian							Pragian					407.6
		Pragian							Pragian				Coblencien	408.2 *
		Lochkovian							Lochkovian				Gedinnine	410.8
Silurian	Pridoli													419.2
	Ludlow	Ludfordian												423
	Ludlow	Gorstian												425.6
	Wenlock	Homerian												Gleedonian	427.4
		Homerian												Whitwellian	429.7 *
		Sheinwoodian													430.5
	Llandovery	Telychian													433.4
		Aeronian													438.5
		Rhuddanian													440.8
Ordovician	Late Ordovician	Hirnantian													Bolindian	443.8
		Katian													Bolindian	445.2
															Eastonian	449 *
											Gisbornian				452 *
		Sandbian									Gisbornian				453
	Middle Ordovician	Darriwilian								Darriwilian	458.4
		Dapingian								Yapeenian	467.3
		Dapingian								Castlemainian	468.5 *
	Early Ordovician	Floian								Chewtonian	470
										Bendigonian	471.8 *
										Lancefieldian	473.5 *
		Tremadocian								Lancefieldian	477.7
		Tremadocian								Warendian	482.8 *
Cambrian	Furongian	Stage 10									Datsonian	485.4
		Stage 10									Payntonian	486.8 *
		Jiangshanian									Iverian	489.5
		Paibian									Idamean	494
	Miaolingian	Guzhangian									Series 3 †	Mindyallan			497
		Guzhangian										Boomerangian			499
		Drumian										Undillan			500.5
		Drumian										Floran			503
		Wuliuan		Stage 5 †								Templetonian			504.5
		Wuliuan		Stage 5 †								Ordian			507.8 *
	Series 2	Stage 4										Ordian			509
																				510.8 *