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			Permian of the Pamirs	Cambrian of Kazakhstan	Devonian Subages	Mesozoic Subages		Permian-Jurassic of New Zealand
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		Dorashamian		Makarewan		251.902
		Changhsingian		Dorashamian		Waiitian		253.2
		Wuchiapingian	Longtanian †	Dzhulfian		Waiitian		254.14
		Wuchiapingian	Longtanian †	Dzhulfian		Puruhauan		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							Ungurian	477.7
Cambrian	Furongian	Stage 10							Batyrbaian	Franconian †/Dresbachian/Millardan	485.4
		Stage 10									Sunwaptan	487.5
		Jiangshanian										489.5
									Aksaian			490.7 *
									Sakian			492.2 *
											Steptoean	493 *
		Paibian									Steptoean	494
	Miaolingian	Guzhangian					Series 3 †		Ayusokkanian	Marjumian	Albertian †	497
		Guzhangian										499.5
		Drumian							Zhanaarykian			500.5
		Drumian							Tuesaian			503
		Wuliuan	Stage 5 †						Tuesaian	Topazan		504.5
										Topazan		505.3
										Delamaran		506.5
	Series 2	Stage 4									Waucoban †	509
									Toyonian			510 *
									Toyonian	Dyeran		511 *
									Botomian			512.5 *
		Stage 3										514
										Montezuman		514.8 *
									Atdabanian	Montezuman		515.6 *
									Atdabanian	Begadean		519.9 *
	Terreneuvian	Stage 2			Tommotian	521
		Stage 2				525.5
		Fortunian				529
													538.8