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, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 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

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			Devonian Subages	Mesozoic Subages		Permian of the Pamirs	Permian-Jurassic of New Zealand		Cambrian of North America
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											23.03
	Oligocene	Rupelian											27.82
	Eocene	Priabonian											33.9
		Bartonian											37.71
		Lutetian											41.2
		Ypresian											47.8
	Paleocene	Thanetian											56
		Selandian											59.2
		Danian											61.6
Cretaceous	Late Cretaceous	Maastrichtian					Late Maastrichtian/Early Maastrichtian						66
		Campanian					Late Campanian/Middle Campanian/Early Campanian						72.1
		Santonian					Late Santonian/Middle Santonian/Early Santonian						83.6
		Coniacian					Late Coniacian/Middle Coniacian/Early Coniacian						86.3
		Turonian					Late Turonian/Middle Turonian/Early Turonian						89.8
		Cenomanian					Late Cenomanian/Middle Cenomanian/Early Cenomanian						93.9
	Early Cretaceous	Albian					Late Albian						100.5
							Middle Albian						106.2 *
							Early Albian						109.9 *
		Aptian					Late Aptian						113
		Aptian					Early Aptian						119.5 *
		Barremian					Late Barremian/Early Barremian						121.4
		Hauterivian					Late Hauterivian/Early Hauterivian						125.77
		Valanginian					Late Valanginian/Early Valanginian						132.6
		Berriasian					Late Berriasian						139.8
							Middle Berriasian						140.6 *
							Early Berriasian						142.7 *
Jurassic	Late Jurassic	Tithonian					Late Tithonian	Middle Tithonian		Oteke	Puaroan		145
		Tithonian					Early Tithonian	Middle Tithonian					146.3 *
		Kimmeridgian					Late Kimmeridgian						149.2
							Late Kimmeridgian			Kawhia	Ohauan		150
							Early Kimmeridgian				Ohauan		152.2 *
							Early Kimmeridgian				Heterian		154.5
		Oxfordian					Late Oxfordian	Middle Oxfordian/Early Oxfordian					154.8
		Oxfordian						Middle Oxfordian/Early Oxfordian					157.9 *
	Middle Jurassic	Callovian					Late Callovian/Middle Callovian/Early Callovian						161.5
		Callovian					Late Callovian/Middle Callovian/Early Callovian				Temaikan		164.3
		Bathonian					Late Bathonian/Middle Bathonian/Early Bathonian						165.3
		Bajocian					Late Bajocian						168.2
		Bajocian					Early Bajocian						168.6 *
		Aalenian					Late Aalenian/Middle Aalenian/Early Aalenian						170.9
	Early Jurassic	Toarcian					Late Toarcian						174.7
							Late Toarcian			Herangi	Ururoan		176
							Middle Toarcian						180.4 *
							Early Toarcian						182.9 *
		Pliensbachian					Late Pliensbachian/Early Pliensbachian						184.2
		Pliensbachian					Late Pliensbachian/Early Pliensbachian				Aratauran		188.9
		Sinemurian					Late Sinemurian/Early Sinemurian						192.9
		Hettangian					Late Hettangian/Middle Hettangian/Early Hettangian						199.5
Triassic	Late Triassic	Rhaetian								Balfour	Otapirian		201.4
		Norian					Sevatian				Warepan		208.5
							Alaunian						213.2 *
							Lacian						216.7 *
											Otamitan		217
											Oretian		221
		Carnian					Tuvalian				Oretian		227
							Tuvalian			Gore	Kaihikuan		227.5
				Julian	233.4 *
	Middle Triassic	Ladinian		Longobardian	237
				Longobardian	Etalian	238
				Fassanian		239.7 *
		Anisian		Illyrian		242
				Pelsonian		243.8 *
				Bithynian		244.7 *
				Aegean		245.5 *
				Aegean	Malakovian	246
	Early Triassic	Olenekian		Spathian		247.2
				Smithian		248.9 *
				Smithian	Nelsonian	249
		Induan		Dienerian		251.2
				Griesbachian		251.4 *
				Griesbachian	DUrville	Makarewan	251.5
Permian	Lopingian	Changhsingian				Makarewan	Dorashamian		251.902
		Changhsingian				Waiitian	Dorashamian		253.2
		Wuchiapingian	Longtanian †			Waiitian	Dzhulfian		254.14
		Wuchiapingian	Longtanian †			Puruhauan	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		Telfordian		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							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		Delamaran						Waucoban †	509
		Stage 4		Dyeran							511 *
		Stage 3		Dyeran							514
				Montezuman							514.8 *
				Begadean							519.9 *
	Terreneuvian	Stage 2									521
	Terreneuvian	Fortunian									529
													538.8