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			Cambrian Epochs	Silurian of North America			Permian of the Russian Platform		Cenozoic Subepochs	Carboniferous of North America	Neogene Mammal Ages of China	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							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							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			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				Late Cambrian						485.4
		Jiangshanian										489.5
		Paibian										494
	Miaolingian	Guzhangian				Series 3 †		Middle Cambrian				497
		Drumian										500.5
		Wuliuan										Stage 5 †	504.5
	Series 2	Stage 4										Early Cambrian	509
	Series 2	Stage 3											514
	Terreneuvian	Stage 2											521
	Terreneuvian	Fortunian											529
																	538.8