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. 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

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 China			Cretaceous-Cenozoic of New Zealand		Carboniferous of China	Devonian of France	Carboniferous of Western Europe		Devonian of Eastern North America		Permian of the Pamirs
Quaternary	Holocene	Meghalayan							Wanganui	Haweran								0
		Northgrippian																0.0042
		Greenlandian																0.0082
	Pleistocene	Late Pleistocene																0.0117
		Chibanian																0.129
		Chibanian								Castlecliffian								0.34
		Calabrian								Castlecliffian								0.774
		Calabrian								Nukumaruan								1.63
		Gelasian								Nukumaruan								1.8
		Gelasian								Mangapanian								2.4
Neogene	Pliocene	Piacenzian	Tertiary †							Mangapanian								2.58
		Piacenzian								Waipipian								3
		Zanclean								Waipipian								3.6
		Zanclean								Opoitian								3.7
	Miocene	Messinian							Taranaki	Kapitean								5.333
		Messinian								Tongaporutuan								7.2
		Tortonian								Tongaporutuan								7.246
		Tortonian							Southland	Waiauan								11.04
		Serravallian								Waiauan								11.63
		Serravallian								Lillburnian								13.05
		Langhian								Lillburnian								13.82
										Clifdenian								15.1
									Pareora	Altonian								15.9
		Burdigalian								Altonian								15.98
		Burdigalian								Otaian								18.7
		Aquitanian								Otaian								20.44
		Aquitanian							Landon	Waitakian								21.7
Paleogene	Oligocene	Chattian								Waitakian								23.03
										Duntroonian								25.2
										Whaingaroan								27.3
		Rupelian																27.82
	Eocene	Priabonian																33.9
									Arnold	Runangan								34.6
										Kaiatan								36.7
		Bartonian								Kaiatan								37.71
		Bartonian								Bortonian								39.1
		Lutetian								Bortonian								41.2
									Dannevirke	Porangan								42.6
										Heretaungan								45.7
		Ypresian								Heretaungan								47.8
										Mangaorapan								48.9
										Waipawan								52
	Paleocene	Thanetian								Teurian								56
		Selandian																59.2
		Danian																61.6
Cretaceous	Late Cretaceous	Maastrichtian							Mata	Haumurian								66
		Campanian								Haumurian								72.1
		Santonian								Piripauan								83.6
		Santonian							Raukumara	Teratan								86.1
		Coniacian																86.3
		Turonian																89.8
										Mangaotanean								90.5
										Arowhanan								93.7
		Cenomanian								Arowhanan								93.9
									Clarence	Ngaterian								95.2
										Motuan								99.5
	Early Cretaceous	Albian								Motuan								100.5
										Urutawan								103.3
									Taitai	Korangan								108.4
		Aptian								Korangan								113
		Aptian																117.5
		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				Makarewan	Dorashamian	251.902
		Changhsingian				Waiitian	Dorashamian	253.2
		Wuchiapingian				Waiitian	Longtanian †	Dzhulfian	254.14
		Wuchiapingian				Puruhauan	Longtanian †	Dzhulfian	254.2
	Guadalupian	Capitanian				Midian	Aparima	Flettian	259.51
		Wordian						Flettian	264.28
								Barettian	266
						Murgabian			266.2 *
		Roadian				Murgabian			266.9
	Cisuralian	Kungurian				Kubergandian			273.01
						Kubergandian		Mangapirian	276
						Bolorian			279.8
		Artinskian							283.5
								Telfordian	285
			Yakhtashian			286		Telfordian
			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 *
								Marsdenian	Lousuan	321.2 *
								Kinderscoutian		321.5 *
								Alportian		322 *
								Chokierian		323.1 *
	Mississippian	Serpukhovian						Chokierian	Dewunian	323.2
								Arnsbergian		324 *
								Pendleian		327.4 *
								Pendleian	Shangsian	330.8 *
		Visean		Warnantian				Brigantian †	Shangsian	330.9
				Warnantian				Brigantian †	Jiusian	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											Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian											Chientangkiangian		Wufeng †	445.2
		Katian											Neichianshanian/Hanjiang			449.5
		Sandbian				453							Neichianshanian/Hanjiang
	Middle Ordovician	Darriwilian				Darriwilian	Guniu †/Hulo						458.4
		Darriwilian				Darriwilian	Hunjiang †						Dawan †/Daobaowan/Ningkuo	466.3 *
		Dapingian				Dapingian								467.3
	Early Ordovician	Floian	Yiyangian			470
		Tremadocian	Xinchangian			477.7
		Tremadocian	Xinchangian			Lianghekou †							477.9 *
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