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
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, 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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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			Central Paratethys Stages	Permian of the Salt Range	Ammonite Chrons of Northwest Europe		Cenozoic Subepochs	Paleogene Mammal Ages of Asia
Quaternary	Pleistocene	Late Pleistocene								Late Pleistocene			0.0117
		Chibanian								Middle Pleistocene			0.129
		Calabrian								Early Pleistocene			0.774
		Gelasian								Early Pleistocene			1.8
Neogene	Pliocene	Piacenzian	Tertiary †							Late Pliocene			2.58
	Pliocene	Zanclean								Early Pliocene			3.6
	Miocene	Messinian								Late Miocene			5.333
		Tortonian				Pannonian				Late Miocene			7.246
		Serravallian				Sarmatian				Middle Miocene			11.63
		Serravallian				Badenian							12.8 *
		Langhian											13.82
		Burdigalian								Early Miocene			15.98
		Aquitanian								Early Miocene			20.44
Paleogene	Oligocene	Chattian								Late Oligocene	Tabenbulakian	Hsandagolian	23.03
	Oligocene	Rupelian								Early Oligocene	Kekeamuan	Hsandagolian	27.82
	Eocene	Priabonian								Late Eocene	Houldjinian/Ergilian/Ulangochuian		33.9
		Bartonian								Middle Eocene	Sharamurunian/Irdinmanhan/Arshantan		37.71
		Lutetian								Middle Eocene			41.2
		Ypresian								Early Eocene		Bumbanian	47.8
	Paleocene	Thanetian								Late Paleocene	Gashatan		56
		Selandian								Middle Paleocene			59.2
		Danian								Early Paleocene			61.6
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											145
		Kimmeridgian											149.2
		Oxfordian											154.8
	Middle Jurassic	Callovian											161.5
		Bathonian											165.3
		Bajocian						Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites					168.2
		Bajocian							Humphresianum				168.4
		Aalenian						Concavum/Murchisonae/Opalinum					170.9
	Early Jurassic	Toarcian						Levesquei/Variabilis/Bifrons	Thouarsense				174.7
								Levesquei/Variabilis/Bifrons					180.1
								Serpentinum/Falciferum/Tenuicostatum					182
		Pliensbachian						Spinatum/Margaritatus/Davoei/Ibex/Jamesoni					184.2
		Sinemurian						Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi					192.9
		Hettangian						Angulata/Liasicus/Planorbis					199.5
Triassic	Late Triassic	Rhaetian											201.4
		Norian											208.5
		Carnian											227
	Middle Triassic	Ladinian											237
	Middle Triassic	Anisian											242
	Early Triassic	Olenekian											247.2
		Induan											251.2
		Induan					Kathwai						251.5 *
Permian	Lopingian	Changhsingian					Kathwai						251.902
													252.4 *
							Chhidru						252.9 *
		Wuchiapingian		Longtanian †			Chhidru						254.14
							Kalabagh						255 *
							Wargal						256 *
	Guadalupian	Capitanian											259.51
		Wordian											264.28
							265.3 *
					Amb		266.1 *
		Roadian			Amb		266.9
		Roadian					270.7 *
	Cisuralian	Kungurian					273.01
		Artinskian					283.5
		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		Cayugan			419.2
	Pridoli		Niagaran			422.5 *
	Ludlow	Ludfordian				423
	Ludlow	Gorstian				425.6
	Wenlock	Homerian				Lockportian	427.4
	Wenlock	Sheinwoodian					430.5
	Llandovery	Telychian				Ontarian	433.4
		Aeronian					438.5
							Alexandrian			438.7 *
			Medinan			Clinton				440.1 *
										440.7 *
		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								485.4
		Jiangshanian								489.5
		Paibian							494
	Miaolingian	Guzhangian							Series 3 †	497
		Drumian								500.5
		Wuliuan		Stage 5 †						504.5
													509