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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 of Siberia			Cambrian of Britain		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								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
		Tremadocian							477.7
		Tremadocian							Mansian †	483.55 *
Cambrian	Furongian	Stage 10							Batyrbaian	Tavgian †	Ketyan †/Yurakian	Merioneth	Dolgellian/Trempealeauan	485.4
		Stage 10				Festiniogian							489.2 *
		Jiangshanian											489.5
									Aksaian				490.7 *
									Sakian				492.2 *
						Maentwrogian							493.1 *
		Paibian						494
		Paibian						Ensyan †/Maduan/Nganasanian			494.7 *
	Miaolingian	Guzhangian				Series 3 †		Ayusokkanian			St Davids		497
		Guzhangian						Mayan/Menevian					499.5
		Drumian						Mayan/Menevian					500.5
		Wuliuan						Stage 5 †					Amgan/Solvan	504.5
	Series 2	Stage 4									Caerfai		Amgan/Solvan	509
									Toyonian				Lenian †	510 *
									Botomian					512.5 *
		Stage 3							Botomian					514
		Stage 3							Atdabanian					515.6 *
	Terreneuvian	Stage 2							Tommotian					521
		Stage 2			Nemakit-Daldynian		525.5
		Fortunian			Nemakit-Daldynian		Manykaian †		529
																		538.8