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
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. 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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. Freudenthal. 2006. Mammal Paleogene zones. personal communication 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 the Baltic				Permian Subages of Germany		Ammonite Chrons of Northwest Europe		Permian-Jurassic of New Zealand		Permian of the Pamirs	Mammal Paleogene Zones
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															MP 30/MP 29/MP 28/MP 27/MP 26	MP 25	23.03
	Oligocene	Rupelian															MP 24/MP 23/MP 22/MP 21	MP 25	27.82
	Eocene	Priabonian															MP 20/MP 19/MP 18/MP 17B/MP 17A		33.9
		Bartonian															MP 16		37.71
		Lutetian															MP 15/MP 14/MP 13/MP 12/MP 11		41.2
		Ypresian															MP 10/MP 8 + 9/MP 7		47.8
	Paleocene	Thanetian															MP 6	MP 1 - 5	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										Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites							168.2
		Bajocian											Humphresianum						168.4
		Aalenian										Concavum/Murchisonae/Opalinum							170.9
	Early Jurassic	Toarcian										Levesquei/Variabilis/Bifrons	Thouarsense						174.7
													Thouarsense	Herangi	Ururoan				176
																			180.1
												Serpentinum/Falciferum/Tenuicostatum							182
		Pliensbachian										Spinatum/Margaritatus/Davoei/Ibex/Jamesoni							184.2
		Pliensbachian										Spinatum/Margaritatus/Davoei/Ibex/Jamesoni			Aratauran				188.9
		Sinemurian										Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi							192.9
		Hettangian										Angulata/Liasicus/Planorbis							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								Buntsandstein					Makarewan	Dorashamian			251.902
		Changhsingian													Waiitian	Dorashamian			253.2
		Wuchiapingian		Longtanian †	Dzhulfian	254.14									Waiitian
		Wuchiapingian		Longtanian †	Dzhulfian	Puruhauan	254.2
	Guadalupian	Capitanian			Ohre/Aller	Aparima	Flettian	Midian	259.51
		Wordian			Leine		Flettian		264.28
							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
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								Red Downtonian/Temeside Shales/Downton Castle	Whitcliffe/Leintwardine	419.2
	Pridoli								Red Downtonian/Temeside Shales/Downton Castle	Bringewood/Elton	421.3
	Ludlow	Ludfordian							Coalbrookdale	Wenlock (England)/Tickwood	423
		Gorstian									425.6
		Gorstian								Buildwas	426.4 *
	Wenlock	Homerian								Buildwas	427.4
		Homerian							Wych	Woolhope	428.4 *
		Sheinwoodian									430.5
	Llandovery	Telychian									433.4
		Telychian									436.3 *
		Aeronian									438.5
		Aeronian							Cowleigh Park		439.3 *
		Rhuddanian							Cowleigh Park		440.8
Ordovician	Late Ordovician	Hirnantian							Harju		Porkuni			443.8
		Katian									Pirgu			445.2
											Vormsi			449.6 *
											Nabala			Johvi †	450 *
									Viru		Rakvere				450.6 *
											Oandu	452 *
		Sandbian									Keila	Idavere †		453
											Haljala			453.9
											Kukruse			456.4 *
											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									Volkhov				467.3
		Dapingian									Billingen				469.3 *
	Early Ordovician	Floian													470
												Latorp †			470.1 *
											Hunneberg				473.7 *
		Tremadocian									Hunneberg				477.7
											Varangu				481.3 *
				Pakerort							482.2 *
Cambrian	Furongian	Stage 10		Pakerort								485.4
												486.3 *
												486.5
		Jiangshanian			489.5
		Paibian			494
	Miaolingian	Guzhangian			Series 3 †							497
		Drumian										500.5
		Wuliuan										Stage 5 †			504.5
																			509