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. 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
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			Ammonite Chrons of Northwest Europe		Cambrian of North America		Ammonite Chrons of North America			Cretaceous-Cenozoic of New Zealand
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			Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites	Epizigzagiceras	168.2
		Bajocian				Humphresianum	Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense	168.4
		Aalenian			Concavum/Murchisonae/Opalinum		Howelli/Scissum/Westermanni	170.9
	Early Jurassic	Toarcian			Levesquei/Variabilis/Bifrons	Thouarsense	Yakounensis/Hillebrandti/Crassicosta	174.7
							Planulata	179.3 *
								Arnioceras arnouldi	179.8 *
									180.1
							Kanense		181.3 *
					Serpentinum/Falciferum/Tenuicostatum		Kanense		182
							Carlottense		182.3 *
							Kunae		183.5 *
		Pliensbachian			Spinatum/Margaritatus/Davoei/Ibex/Jamesoni		Kunae		184.2
							Freboldi		185.1 *
							Whiteavesi/Imlayi		Tetraspidoceras	186.2 *
									Tetraspidoceras	189.2 *
							Plesechioceras harbledownense/Asteroceras varians/Coroniceras		Canadensis	190.3 *
		Sinemurian			Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi					192.9
							Pseudaetomoceras	Psiloceras		196.4 *
							Franziceras/Euphyllites			196.5 *
		Hettangian			Angulata/Liasicus/Planorbis		Franziceras/Euphyllites			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
		Induan								251.2
		Induan								Kathwai	251.5 *
Permian	Lopingian	Changhsingian								Kathwai	251.902
											252.4 *
										Chhidru	252.9 *
		Wuchiapingian								Chhidru	Longtanian †	254.14
										Kalabagh		255 *
										Wargal		256 *
	Guadalupian	Capitanian										259.51
		Wordian										264.28
												265.3 *
										Amb		266.1 *
		Roadian								Amb		266.9
		Roadian								270.7 *
	Cisuralian	Kungurian								273.01
		Artinskian								283.5
		Sakmarian								290.1
		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								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		382.7
										Middle Givetian		383.7 *
				Early Givetian						385.9 *
		Eifelian		Late Eifelian						387.7
		Eifelian		Early Eifelian						390.3 *
	Early Devonian	Emsian		Late Emsian						393.3
		Emsian		Early Emsian						398.3 *
		Pragian		Pragian						407.6
		Lochkovian		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