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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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 Subepochs	Permian-Jurassic of New Zealand		Cenozoic Subepochs	Ordovician of North America					Silurian of North America
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							Late Miocene							7.246
		Serravallian							Middle Miocene							11.63
		Langhian							Middle Miocene							13.82
		Burdigalian							Early Miocene							15.98
		Aquitanian							Early Miocene							20.44
Paleogene	Oligocene	Chattian							Late Oligocene							23.03
	Oligocene	Rupelian							Early Oligocene							27.82
	Eocene	Priabonian							Late Eocene							33.9
		Bartonian							Middle Eocene							37.71
		Lutetian							Middle Eocene							41.2
		Ypresian							Early Eocene							47.8
	Paleocene	Thanetian							Late Paleocene							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					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						Ururoan								184.2
		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					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					Cincinnatian		Gamachian		443.8
		Katian							Gamachian		445.2
									Richmondian		446 *
									Maysvillian		Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
									Edenian			450.4 *
							Mohawkian		Chatfieldian			451.1 *
		Sandbian							Chatfieldian			453
									Turinian			453.7 *
							Whiterockian				Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian											458.4
		Dapingian											467.3
		Dapingian							Rangerian				469.1 *
	Early Ordovician	Floian					Ibexian		Blackhillsian			Jeffersonian †	Cassinian †	470
		Floian							Tulean					473.9 *
		Tremadocian							Tulean					477.7
									Stairsian					480.3 *
									Skullrockian				Demingian †	482 *
Cambrian	Furongian	Stage 10							Skullrockian					485.4
		Stage 10												487.5
		Jiangshanian												489.5
		Paibian												494
	Miaolingian	Guzhangian												Series 3 †	497
		Drumian													500.5
		Wuliuan		Stage 5 †											504.5
																509