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			Carboniferous of China	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
		Gzhelian							Xiaodushanian	300 *
		Kasimovian							Xiaodushanian	303.7
		Kasimovian							Dalaun	305.8 *
		Moscovian								307
		Bashkirian								315.2
									Huashibanian	318.5 *
									Lousuan	321.2 *
	Mississippian	Serpukhovian							Dewunian	323.2
		Serpukhovian						Shangsian	330.8 *
		Visean						Shangsian	330.9
		Visean						Jiusian	335 *
		Tournaisian						Tangbagouan	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