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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 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 of North America	Cretaceous-Cenozoic of New Zealand		Silurian of the Baltic	Paleogene Mammal Ages of Asia		Cretaceous North American Land-Mammal Ages	Cenozoic Subepochs
Quaternary	Holocene	Meghalayan					Wanganui	Haweran						0
		Northgrippian												0.0042
		Greenlandian												0.0082
	Pleistocene	Late Pleistocene											Late Pleistocene	0.0117
		Chibanian											Middle Pleistocene	0.129
		Chibanian						Castlecliffian					Middle Pleistocene	0.34
		Calabrian						Castlecliffian					Early Pleistocene	0.774
		Calabrian						Nukumaruan						1.63
		Gelasian						Nukumaruan						1.8
		Gelasian						Mangapanian						2.4
Neogene	Pliocene	Piacenzian	Tertiary †					Mangapanian					Late Pliocene	2.58
		Piacenzian						Waipipian					Late Pliocene	3
		Zanclean						Waipipian					Early Pliocene	3.6
		Zanclean						Opoitian					Early Pliocene	3.7
	Miocene	Messinian					Taranaki	Kapitean					Late Miocene	5.333
		Messinian						Tongaporutuan						7.2
		Tortonian						Tongaporutuan						7.246
		Tortonian					Southland	Waiauan						11.04
		Serravallian						Waiauan					Middle Miocene	11.63
		Serravallian						Lillburnian						13.05
		Langhian						Lillburnian						13.82
								Clifdenian						15.1
							Pareora	Altonian						15.9
		Burdigalian						Altonian					Early Miocene	15.98
		Burdigalian						Otaian						18.7
		Aquitanian						Otaian						20.44
		Aquitanian					Landon	Waitakian						21.7
Paleogene	Oligocene	Chattian						Waitakian		Tabenbulakian	Hsandagolian		Late Oligocene	23.03
								Duntroonian						25.2
								Whaingaroan						27.3
		Rupelian								Kekeamuan			Early Oligocene	27.82
	Eocene	Priabonian								Houldjinian/Ergilian/Ulangochuian			Late Eocene	33.9
							Arnold	Runangan						34.6
								Kaiatan						36.7
		Bartonian						Kaiatan		Sharamurunian/Irdinmanhan/Arshantan			Middle Eocene	37.71
		Bartonian						Bortonian						39.1
		Lutetian						Bortonian						41.2
							Dannevirke	Porangan						42.6
								Heretaungan						45.7
		Ypresian						Heretaungan			Bumbanian		Early Eocene	47.8
								Mangaorapan						48.9
								Waipawan						52
	Paleocene	Thanetian						Teurian		Gashatan			Late Paleocene	56
		Selandian											Middle Paleocene	59.2
		Danian											Early Paleocene	61.6
Cretaceous	Late Cretaceous	Maastrichtian					Mata	Haumurian				Lancian/Edmontonian		66
		Campanian						Haumurian				Judithian/Aquilan		72.1
		Santonian						Piripauan						83.6
		Santonian					Raukumara	Teratan						86.1
		Coniacian												86.3
		Turonian												89.8
								Mangaotanean						90.5
								Arowhanan						93.7
		Cenomanian						Arowhanan						93.9
							Clarence	Ngaterian						95.2
								Motuan						99.5
	Early Cretaceous	Albian						Motuan						100.5
								Urutawan						103.3
							Taitai	Korangan						108.4
		Aptian						Korangan						113
		Aptian												117.5
		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			168.2
		Aalenian			170.9
	Early Jurassic	Toarcian			174.7
		Pliensbachian			184.2
		Sinemurian			192.9
		Hettangian			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
	Early Triassic	Induan			251.2
Permian	Lopingian	Changhsingian			251.902
	Lopingian	Wuchiapingian			Longtanian †	254.14
	Guadalupian	Capitanian				259.51
		Wordian				264.28
		Roadian				266.9
	Cisuralian	Kungurian				273.01
		Artinskian				283.5
		Sakmarian				290.1
		Asselian				Bursumian †	293.52
Carboniferous	Pennsylvanian	Gzhelian				Virgilian	298.9
		Kasimovian				Missourian	303.7
		Kasimovian				Desmoinesian	305.9 *
		Moscovian				Desmoinesian	307
		Moscovian				Atokan	312.7 *
		Bashkirian				Atokan	315.2
		Bashkirian				Morrowan	318.4 *
	Mississippian	Serpukhovian				Chesterian	323.2
		Visean				Chesterian	330.9
						Meramecian	335.8 *
						Osagean	343.1 *
		Tournaisian				Osagean	346.7
		Tournaisian				Kinderhookian	351.9 *
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		Ohesaare				419.2
	Pridoli		Kaugetuma				421.7 *
	Ludlow	Ludfordian	Kuressaare				423
		Ludfordian	Paadla				423.4 *
		Gorstian	Paadla				425.6
	Wenlock	Homerian	Rootsikula				427.4
		Homerian	Jaagarahu				429.2 *
		Sheinwoodian	Jaagarahu				430.5
		Sheinwoodian	Jaani				431.8 *
	Llandovery	Telychian	Jaani				433.4
		Telychian	Adavere				434 *
		Aeronian	Adavere				438.5
		Aeronian	Raikkula				439.4 *
		Rhuddanian	Raikkula				440.8
		Rhuddanian	Juuru				441.4 *
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		Niuchehean			Taoyuanian †	485.4
		Jiangshanian		Jiangshanian				489.5
		Paibian		Paibian				494
		Paibian		Paibian			Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian		Series 3 †			Guzhangian	Wangcunian †	497
		Drumian					Drumian	Wangcunian †	500.5
		Wuliuan			Stage 5 †		Wuliuan/Taijangian		504.5
	Series 2	Stage 4					Duyunian		509
	Series 2	Stage 3					Nangaoian		514
	Terreneuvian	Stage 2					Meishucunian		521
		Fortunian					Meishucunian		529
		Fortunian					Jinnigian		530.7
														538.8