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, 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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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

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			Mesozoic Subages		Permian-Jurassic of New Zealand		Cambrian of Kazakhstan
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		251.902
		Changhsingian				Waiitian		253.2
		Wuchiapingian	Longtanian †			Waiitian		254.14
		Wuchiapingian	Longtanian †			Puruhauan		254.2
	Guadalupian	Capitanian			Aparima	Flettian		259.51
		Wordian				Flettian		264.28
		Wordian				Barettian		266
		Roadian						266.9
	Cisuralian	Kungurian						273.01
		Kungurian				Mangapirian		276
		Artinskian				Mangapirian		283.5
						Telfordian		285
								288.5
		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						358.9
	Late Devonian	Frasnian						372.2
	Middle Devonian	Givetian						382.7
	Middle Devonian	Eifelian						387.7
	Early Devonian	Emsian						393.3
		Pragian					407.6
		Lochkovian					410.8
Silurian	Pridoli						419.2
	Ludlow	Ludfordian					423
	Ludlow	Gorstian					425.6
	Wenlock	Homerian					Gleedonian	427.4
		Homerian					Whitwellian	429.7 *
		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						Ungurian	477.7
Cambrian	Furongian	Stage 10						Batyrbaian	485.4
		Jiangshanian						Batyrbaian	489.5
								Aksaian	490.7 *
								Sakian	492.2 *
		Paibian						Sakian	494
	Miaolingian	Guzhangian						Series 3 †	Ayusokkanian	497
		Guzhangian								499.5
		Drumian							Zhanaarykian	500.5
		Drumian							Tuesaian	503
		Wuliuan	Stage 5 †						Tuesaian	504.5
		Wuliuan	Stage 5 †							505.3
	Series 2	Stage 4								509
									Toyonian	510 *
									Botomian	512.5 *
		Stage 3							Botomian	514
		Stage 3							Atdabanian	515.6 *
	Terreneuvian	Stage 2							Tommotian	521
											525.5