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. 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
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
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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			Cambrian of North America		Devonian Subages	Devonian of Germany	Cretaceous-Cenozoic of New Zealand		Ordovician of Britain		Central Paratethys Stages	Mammal Paleogene Zones
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			Pannonian			7.246
		Tortonian								Southland	Waiauan			Pannonian			11.04
		Serravallian												Sarmatian			11.63
														Badenian			12.8 *
											Lillburnian			Badenian			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				MP 30/MP 29/MP 28/MP 27/MP 26	MP 25	23.03
											Duntroonian						25.2
											Whaingaroan						27.3
		Rupelian													MP 24/MP 23/MP 22/MP 21		27.82
	Eocene	Priabonian													MP 20/MP 19/MP 18/MP 17B/MP 17A		33.9
										Arnold	Runangan						34.6
											Kaiatan						36.7
		Bartonian									Kaiatan				MP 16		37.71
		Bartonian									Bortonian				MP 16		39.1
		Lutetian									Bortonian				MP 15/MP 14/MP 13/MP 12/MP 11		41.2
										Dannevirke	Porangan						42.6
											Heretaungan						45.7
		Ypresian									Heretaungan				MP 10/MP 8 + 9/MP 7		47.8
											Mangaorapan						48.9
											Waipawan						52
	Paleocene	Thanetian									Teurian				MP 6	MP 1 - 5	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			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
					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 *
							Tetraspidoceras	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						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
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						Wocklum/Dasberg/Hemberg/Nehden	358.9
			Middle Famennian							365.3 *
			Early Famennian							368.5 *
		Frasnian	Late Frasnian						Adorf	372.2
			Middle Frasnian							375.4 *
			Early Frasnian							379.3 *
	Middle Devonian	Givetian	Late Givetian						Givetian	382.7
			Middle Givetian							383.7 *
			Early Givetian							385.9 *
		Eifelian	Late Eifelian						Eifelian	387.7
		Eifelian	Early Eifelian						Eifelian	390.3 *
	Early Devonian	Emsian	Late Emsian						Emsian	393.3
		Emsian	Early Emsian						Emsian	398.3 *
		Pragian	Pragian						Siegen	407.6
		Lochkovian	Late Lochkovian						Gedinnine	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		Ashgill						Hirnantian	443.8
		Katian								Rawtheyan	445.2
										Cautleyan	448.9 *
										Pusgillian	449.3 *
				Caradoc						Streffordian	Onnian †	449.6 *
										Cheneyan		451.5 *
										Burrellian		452.7 *
		Sandbian										453
											Actonian †	453.2 *
											Marshbrookian †	Woolstonian †	454.2 *
											Longvillian †		455.2 *
										Aurelucian	Longvillian †		456.8 *
										Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian		Llanvirn						Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian					Abereiddian/Early Llanvirn			461.3 *
		Dapingian					Abereiddian/Early Llanvirn			467.3
		Dapingian		Arenig	Fennian	468.4 *
	Early Ordovician	Floian			Fennian	470
					Whitlandian	471.1 *
					Moridunian	474.3 *
		Tremadocian		Tremadoc	Migneintian	477.7
				Tremadoc	Cressagian	480.8 *
						485 *
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