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
A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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
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			Permian of the Russian Platform		North American Land Mammal Ages	Ordovician of Britain				Paleogene Mammal Ages of Asia		Carboniferous of Western Europe		Ordovician of Australia	Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan						Saintaugustinean										Wanganui	Haweran	0
		Meghalayan						Santarosean												0.0004
		Northgrippian																		0.0042
		Greenlandian																		0.0082
	Pleistocene	Late Pleistocene																		0.0117
		Late Pleistocene						Rancholabrean												0.014
		Chibanian						Rancholabrean												0.129
								Irvingtonian												0.21
																			Castlecliffian	0.34
		Calabrian																		0.774
								Blancan												1.4
																			Nukumaruan	1.63
		Gelasian																	Nukumaruan	1.8
		Gelasian																	Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †																Mangapanian	2.58
		Piacenzian																	Waipipian	3
		Zanclean																	Waipipian	3.6
																			Opoitian	3.7
								Hemphillian											Opoitian	4.7
	Miocene	Messinian																Taranaki	Kapitean	5.333
		Messinian																	Tongaporutuan	7.2
		Tortonian																		7.246
								Clarendonian												9.4
																		Southland	Waiauan	11.04
		Serravallian																		11.63
								Barstovian												12.5
																			Lillburnian	13.05
		Langhian																	Lillburnian	13.82
																			Clifdenian	15.1
																		Pareora	Altonian	15.9
		Burdigalian																		15.98
								Hemingfordian												16.3
								Arikareean												18.5
																			Otaian	18.7
		Aquitanian																	Otaian	20.44
		Aquitanian																Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian											Tabenbulakian	Hsandagolian					Waitakian	23.03
																			Duntroonian	25.2
																			Whaingaroan	27.3
		Rupelian											Kekeamuan							27.82
								Whitneyan												29.5
								Orellan												31.8
	Eocene	Priabonian						Chadronian					Houldjinian/Ergilian/Ulangochuian							33.9
																		Arnold	Runangan	34.6
																			Kaiatan	36.7
								Duchesnean												37
		Bartonian											Sharamurunian/Irdinmanhan/Arshantan							37.71
																			Bortonian	39.1
								Uintan												39.7
		Lutetian																		41.2
																		Dannevirke	Porangan	42.6
																			Heretaungan	45.7
								Bridgerian												46.2
		Ypresian												Bumbanian						47.8
																			Mangaorapan	48.9
								Wasatchian											Mangaorapan	50.5
								Wasatchian											Waipawan	52
								Clarkforkian											Waipawan	54.9
	Paleocene	Thanetian						Clarkforkian					Gashatan						Teurian	56
		Thanetian						Tiffanian					Gashatan							56.2
		Selandian						Tiffanian												59.2
		Selandian						Torrejonian												60.9
		Danian						Torrejonian												61.6
		Danian						Puercan												63.8
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
	Early Triassic	Induan					251.2
Permian	Lopingian	Changhsingian					251.902
		Wuchiapingian					Longtanian †	Zechstein	254.14
		Wuchiapingian					Longtanian †	Zechstein	Tatarian	Vyatkian	256.8 *
	Guadalupian	Capitanian						Severodvinian		Rotliegendes	259.51
		Wordian						Urzhumian			264.28
		Roadian						Kazanian	Povolzhian		266.9
		Roadian						Kazanian	Sokian		270.7 *
	Cisuralian	Kungurian						Kungurian	Irenian/Ufimian		273.01
									Filipovian		276.5 *
									Saraninian		280.1 *
		Artinskian						Artinskian	Sarginian	Autunian	283.5
									Irginian		285.9 *
									Burtsevian		287.8 *
		Sakmarian						Sakmarian	Sterlitamakian		290.1
		Sakmarian						Sakmarian	Tastubian		291.7 *
		Asselian						Asselian	Shikhanian		293.52
									Uskalykian		294.8
									Surenian		297.5
									Surenian		Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian									Kuzel	298.9
											Stephanian	Stephanian C		300.3 *
												Stephanian B		300.9 *
												Stephanian A	301.4 *
		Kasimovian										Stephanian A	303.7
		Kasimovian										Cantabrian	305 *
		Moscovian										Cantabrian	307
			Westphalian	Westphalian D							307.4 *
				Westphalian C							309.8
				Westphalian B							314.6
		Bashkirian		Westphalian B							315.2
				Westphalian A							317 *
			Namurian	Yeadonian							318.8 *
				Marsdenian							320.2 *
				Kinderscoutian							321.5 *
				Alportian							322 *
				Chokierian							323.1 *
	Mississippian	Serpukhovian		Chokierian							323.2
				Arnsbergian							324 *
				Pendleian							327.4 *
		Visean	Warnantian	Brigantian †							330.9
			Livian	Asbian †							336.3 *
			Moliniacian	Holkerian †/Arundian/Chadian		340.2 *
		Tournaisian	Ivorian			346.7
		Tournaisian	Hastarian			353.7 *
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				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			Ashgill	Hirnantian					Bolindian	Cincinnatian	Gamachian	443.8
		Katian				Rawtheyan							Gamachian	445.2
						Rawtheyan							Richmondian	446 *
						Cautleyan								448.9 *
						Cautleyan					Eastonian			449 *
						Pusgillian								449.3 *
					Caradoc	Streffordian								Onnian †	449.6 *
													Maysvillian		Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
							Edenian						450.4 *
							Mohawkian					Chatfieldian	451.1 *
						Cheneyan							451.5 *
						Cheneyan					Gisbornian		452 *
						Burrellian							452.7 *
		Sandbian											453
													Actonian †	453.2 *
												Turinian	Actonian †	453.7 *
													Marshbrookian †	Woolstonian †		454.2 *
													Longvillian †			455.2 *
						Aurelucian										456.8 *
							Whiterockian								Canadian †	Chazyan †/Marmor	457 *
													Soudleyan †/Harnagian/Costonian				457.4 *
	Middle Ordovician	Darriwilian			Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn							Darriwilian				458.4
		Darriwilian				Abereiddian/Early Llanvirn							Darriwilian				461.3 *
		Dapingian				Abereiddian/Early Llanvirn							Yapeenian				467.3
					Arenig	Fennian		468.4 *					Yapeenian
								Castlemainian	468.5 *
								Castlemainian	Rangerian	469.1 *
	Early Ordovician	Floian					Chewtonian	Ibexian	Blackhillsian	Jeffersonian †		Cassinian †	470
						Whitlandian	Chewtonian						471.1 *
							Bendigonian						471.8 *
							Lancefieldian						473.5 *
									Tulean				473.9 *
						Moridunian							474.3 *
		Tremadocian			Tremadoc	Migneintian							477.7
						Migneintian			Stairsian				480.3 *
						Cressagian			Stairsian				480.8 *
									Skullrockian			Demingian †	482 *
							Warendian						482.8 *
							Warendian						485 *
Cambrian	Furongian	Stage 10													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