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
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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Devonian Subages	Cretaceous-Cenozoic of New Zealand		Carboniferous of Western Europe		Devonian of Czechoslovakia
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			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				259.51
		Wordian				264.28
		Roadian				266.9
	Cisuralian	Kungurian				273.01
		Artinskian				283.5
		Sakmarian				290.1
		Asselian				293.52
		Asselian				Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian				Kuzel	298.9
						Stephanian	Stephanian C		300.3 *
							Stephanian B		300.9 *
							Stephanian A		301.4 *
		Kasimovian					Stephanian A		303.7
		Kasimovian					Cantabrian		305 *
		Moscovian					Cantabrian		307
						Westphalian	Westphalian D		307.4 *
							Westphalian C		309.8
							Westphalian B		314.6
		Bashkirian					Westphalian B		315.2
							Westphalian A		317 *
						Namurian	Yeadonian		318.8 *
							Marsdenian		320.2 *
							Kinderscoutian		321.5 *
							Alportian		322 *
			Chokierian				323.1 *
	Mississippian	Serpukhovian	Chokierian				323.2
			Arnsbergian				324 *
			Pendleian				327.4 *
		Visean	Warnantian			Brigantian †	330.9
			Livian			Asbian †	336.3 *
			Moliniacian			Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian	Ivorian				346.7
		Tournaisian	Hastarian				353.7 *
Devonian	Late Devonian	Famennian	Late Famennian						358.9
			Middle Famennian						365.3 *
			Early Famennian						368.5 *
		Frasnian	Late Frasnian						372.2
			Middle Frasnian						375.4 *
			Early Frasnian						379.3 *
	Middle Devonian	Givetian	Late Givetian					Srbsko	382.7
			Middle Givetian						383.7 *
			Early Givetian						385.9 *
		Eifelian	Late Eifelian					Chotec	387.7
		Eifelian	Early Eifelian					Chotec	390.3 *
	Early Devonian	Emsian	Late Emsian	Daleje/Zlichovian				393.3
		Emsian	Early Emsian	Daleje/Zlichovian				398.3 *
		Pragian	Pragian	Pragian				407.6
		Lochkovian	Late Lochkovian	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