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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view
J. Alroy. 2000. New methods for quantifying macroevolutionary patterns and processes. Paleobiology 26(4):707-733 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			Devonian Subages	Central Paratethys Stages	Cambrian of North America		Carboniferous Subepochs	North American Mammal Subages/Zones			Permian-Jurassic of New Zealand
Quaternary	Pleistocene	Late Pleistocene									Sheridanian					0.0117
		Chibanian									Sheridanian					0.129
		Chibanian									Cudahyan/Sappan					0.21
		Calabrian									Cudahyan/Sappan					0.774
		Calabrian									Senecan/Rexroadian					1.4
		Gelasian														1.8
Neogene	Pliocene	Piacenzian	Tertiary †													2.58
		Zanclean														3.6
		Zanclean									Late Hemphillian/late Early Hemphillian/early Early Hemphillian					4.7
	Miocene	Messinian														5.333
		Tortonian					Pannonian									7.246
		Tortonian					Pannonian				Late Clarendonian/Early Clarendonian					9.4
		Serravallian					Sarmatian				Late Clarendonian/Early Clarendonian					11.63
							Sarmatian				late Late Barstovian/early Late Barstovian/Early Barstovian					12.5
							Badenian									12.8 *
		Langhian														13.82
		Burdigalian														15.98
											Late Hemingfordian/Early Hemingfordian					16.3
											late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean	Harrisonian				18.5
		Aquitanian														20.44
Paleogene	Oligocene	Chattian														23.03
												Monroecreekian				23.1 *
												Geringian				24.7 *
		Rupelian										Geringian				27.82
		Rupelian														29.5
	Eocene	Priabonian									Late Chadronian/Middle Chadronian/Early Chadronian					33.9
		Priabonian														37
		Bartonian														37.71
		Bartonian									Late Uintan/Early Uintan					39.7
		Lutetian									Late Uintan/Early Uintan					41.2
		Lutetian									Twinbuttean/Blacksforkian/Gardnerbuttian					46.2
		Ypresian									Twinbuttean/Blacksforkian/Gardnerbuttian					47.8
											Lostcabinian/Lysitean/Graybullian/Sandcouleean					50.5
													Cf3/Cf2/Cf1			54.9
	Paleocene	Thanetian											Cf3/Cf2/Cf1			56
		Thanetian											Ti6/Ti5/Ti4/Ti3/Ti2/Ti1			56.2
		Selandian											Ti6/Ti5/Ti4/Ti3/Ti2/Ti1			59.2
		Selandian											To3/To2/To1			60.9
		Danian											To3/To2/To1			61.6
		Danian											Pu3/Pu2/Pu1			63.8
Cretaceous	Late Cretaceous	Maastrichtian														66
		Campanian														72.1
		Santonian														83.6
		Coniacian														86.3
		Turonian														89.8
		Cenomanian														93.9
	Early Cretaceous	Albian														100.5
		Aptian														113
		Barremian														121.4
		Hauterivian														125.77
		Valanginian														132.6
		Berriasian														139.8
Jurassic	Late Jurassic	Tithonian												Oteke	Puaroan	145
		Kimmeridgian												Oteke	Puaroan	149.2
														Kawhia	Ohauan	150
															Heterian	154.5
		Oxfordian														154.8
	Middle Jurassic	Callovian														161.5
		Callovian													Temaikan	164.3
		Bathonian														165.3
		Bajocian														168.2
		Aalenian														170.9
	Early Jurassic	Toarcian														174.7
		Toarcian												Herangi	Ururoan	176
		Pliensbachian		184.2											Ururoan
		Pliensbachian		Aratauran	188.9
		Sinemurian			192.9
		Hettangian			199.5
Triassic	Late Triassic	Rhaetian		Balfour	Otapirian	201.4
		Norian			Warepan	208.5
					Otamitan	217
					Oretian	221
		Carnian			Oretian	227
		Carnian		Gore	Kaihikuan	227.5
	Middle Triassic	Ladinian			Kaihikuan	237
		Ladinian			Etalian	238
		Anisian			Etalian	242
		Anisian			Malakovian	246
	Early Triassic	Olenekian			Malakovian	247.2
		Olenekian			Nelsonian	249
		Induan			Nelsonian	251.2
		Induan		DUrville	Makarewan	251.5
Permian	Lopingian	Changhsingian			Makarewan	251.902
		Changhsingian			Waiitian	253.2
		Wuchiapingian			Waiitian	Longtanian †	254.14
		Wuchiapingian			Puruhauan	Longtanian †	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					Late Pennsylvanian	298.9
		Kasimovian					Late Pennsylvanian	303.7
		Moscovian					Middle Pennsylvanian	307
		Bashkirian					Early Pennsylvanian	315.2
	Mississippian	Serpukhovian					Late Mississippian	323.2
		Visean					Middle Mississippian	330.9
		Tournaisian					Early Mississippian	346.7
Devonian	Late Devonian	Famennian	Late Famennian					Famennian	358.9
			Middle Famennian						365.3 *
			Early Famennian						368.5 *
		Frasnian	Late Frasnian					Frasnian	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					Couvinien	387.7
		Eifelian	Early Eifelian						390.3 *
	Early Devonian	Emsian	Late Emsian						393.3
		Emsian	Early Emsian						398.3 *
		Pragian	Pragian						407.6
		Pragian	Pragian					Coblencien	408.2 *
		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							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