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
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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			Obsolete Carboniferous Ages of China	Permian of the Russian Platform		Cenozoic Subepochs	Carboniferous of North America	Neogene Mammal Ages of China	Devonian Subages	Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan											Wanganui	Haweran	0
		Northgrippian													0.0042
		Greenlandian													0.0082
	Pleistocene	Late Pleistocene							Late Pleistocene		Nihewanian				0.0117
		Chibanian							Middle Pleistocene						0.129
		Chibanian							Middle Pleistocene					Castlecliffian	0.34
		Calabrian							Early Pleistocene					Castlecliffian	0.774
		Calabrian												Nukumaruan	1.63
		Gelasian												Nukumaruan	1.8
		Gelasian												Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †						Late Pliocene		Yushean			Mangapanian	2.58
		Piacenzian							Late Pliocene					Waipipian	3
		Zanclean							Early Pliocene					Waipipian	3.6
														Opoitian	3.7
											Baodean			Opoitian	4.9
	Miocene	Messinian							Late Miocene				Taranaki	Kapitean	5.333
		Messinian												Tongaporutuan	7.2
		Tortonian												Tongaporutuan	7.246
													Southland	Waiauan	11.04
											Tunggurian				11.1
		Serravallian							Middle Miocene						11.63
		Serravallian												Lillburnian	13.05
		Langhian									Shanwangian			Lillburnian	13.82
														Clifdenian	15.1
													Pareora	Altonian	15.9
		Burdigalian							Early Miocene						15.98
											Xiejiaan				16.9
														Otaian	18.7
		Aquitanian												Otaian	20.44
		Aquitanian											Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian							Late Oligocene					Waitakian	23.03
														Duntroonian	25.2
														Whaingaroan	27.3
		Rupelian							Early Oligocene						27.82
	Eocene	Priabonian							Late Eocene						33.9
													Arnold	Runangan	34.6
														Kaiatan	36.7
		Bartonian							Middle Eocene					Kaiatan	37.71
		Bartonian												Bortonian	39.1
		Lutetian												Bortonian	41.2
													Dannevirke	Porangan	42.6
														Heretaungan	45.7
		Ypresian							Early Eocene					Heretaungan	47.8
														Mangaorapan	48.9
														Waipawan	52
	Paleocene	Thanetian							Late Paleocene					Teurian	56
		Selandian							Middle Paleocene						59.2
		Danian							Early Paleocene						61.6
Cretaceous	Late Cretaceous	Maastrichtian											Mata	Haumurian	66
		Campanian												Haumurian	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
		Induan			251.2
		Induan			Kathwai	251.5 *
Permian	Lopingian	Changhsingian			Kathwai	251.902
						252.4 *
					Chhidru	252.9 *
		Wuchiapingian			Chhidru	Longtanian †	254.14
					Kalabagh		255 *
					Wargal		256 *
							Tatarian	Vyatkian		256.8 *
	Guadalupian	Capitanian						Severodvinian		259.51
		Wordian						Urzhumian		264.28
										265.3 *
					Amb					266.1 *
		Roadian			Amb		Kazanian	Povolzhian		266.9
		Roadian			Sokian		Kazanian			270.7 *
	Cisuralian	Kungurian			Kungurian		Irenian/Ufimian			273.01
							Filipovian			276.5 *
							Saraninian			280.1 *
		Artinskian			Artinskian		Sarginian			283.5
							Irginian			285.9 *
							Burtsevian			287.8 *
		Sakmarian			Sakmarian		Sterlitamakian			290.1
		Sakmarian			Sakmarian		Tastubian			291.7 *
		Asselian			Asselian		Shikhanian			Bursumian †	293.52
							Uskalykian				294.8
							Surenian				297.5
Carboniferous	Pennsylvanian	Gzhelian			Mapingian †						Virgilian	298.9
		Kasimovian	Missourian		Mapingian †				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							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							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