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
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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view
J. Alroy. 2000. New methods for quantifying macroevolutionary patterns and processes. Paleobiology 26(4):707-733 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Ordovician of North America						Cambrian of Kazakhstan	Cretaceous-Cenozoic of New Zealand		Ordovician of Ibero-Bohemia			Cambrian of China		North American Mammal Subages/Zones
Quaternary	Holocene	Meghalayan											Wanganui	Haweran									0
		Northgrippian																					0.0042
		Greenlandian																					0.0082
	Pleistocene	Late Pleistocene																		Sheridanian			0.0117
		Chibanian																		Sheridanian			0.129
																				Cudahyan/Sappan			0.21
														Castlecliffian									0.34
		Calabrian																					0.774
																				Senecan/Rexroadian			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
														Opoitian						Late Hemphillian/late Early Hemphillian/early Early Hemphillian			4.7
	Miocene	Messinian											Taranaki	Kapitean									5.333
		Messinian												Tongaporutuan									7.2
		Tortonian																					7.246
																				Late Clarendonian/Early Clarendonian			9.4
													Southland	Waiauan									11.04
		Serravallian																					11.63
																				late Late Barstovian/early Late Barstovian/Early Barstovian			12.5
														Lillburnian									13.05
		Langhian												Lillburnian									13.82
														Clifdenian									15.1
													Pareora	Altonian									15.9
		Burdigalian																					15.98
																				Late Hemingfordian/Early Hemingfordian			16.3
																				late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean	Harrisonian		18.5
														Otaian									18.7
		Aquitanian												Otaian									20.44
		Aquitanian											Landon	Waitakian									21.7
Paleogene	Oligocene	Chattian																					23.03
																					Monroecreekian		23.1 *
																					Geringian		24.7 *
														Duntroonian									25.2
														Whaingaroan									27.3
		Rupelian																					27.82
		Rupelian																					29.5
	Eocene	Priabonian																		Late Chadronian/Middle Chadronian/Early Chadronian			33.9
													Arnold	Runangan									34.6
														Kaiatan									36.7
																							37
		Bartonian																					37.71
														Bortonian									39.1
																				Late Uintan/Early Uintan			39.7
		Lutetian																					41.2
													Dannevirke	Porangan									42.6
														Heretaungan									45.7
																				Twinbuttean/Blacksforkian/Gardnerbuttian			46.2
		Ypresian																					47.8
														Mangaorapan									48.9
														Mangaorapan						Lostcabinian/Lysitean/Graybullian/Sandcouleean			50.5
														Waipawan						Lostcabinian/Lysitean/Graybullian/Sandcouleean			52
														Waipawan								Cf3/Cf2/Cf1	54.9
	Paleocene	Thanetian												Teurian								Cf3/Cf2/Cf1	56
		Thanetian																				Ti6/Ti5/Ti4/Ti3/Ti2/Ti1	56.2
		Selandian																				Ti6/Ti5/Ti4/Ti3/Ti2/Ti1	59.2
		Selandian																				To3/To2/To1	60.9
		Danian																				To3/To2/To1	61.6
		Danian																				Pu3/Pu2/Pu1	63.8
Cretaceous	Late Cretaceous	Maastrichtian											Mata	Haumurian									66
		Campanian		72.1										Haumurian
		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					293.52
Carboniferous	Pennsylvanian	Gzhelian					298.9
		Kasimovian					303.7
		Moscovian					307
		Bashkirian					315.2
	Mississippian	Serpukhovian					323.2
		Visean					330.9
		Tournaisian					346.7
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	Cincinnatian				Gamachian	Kosovian	Harju	Porkuni	443.8
		Katian					Gamachian	Kralodvorian		Bohdalec †	Pirgu	445.2
							Richmondian				Pirgu	446 *
											Vormsi	449.6 *
								Berounian				449.7 *
							Maysvillian					Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
							Maysvillian				Nabala		Johvi †	450 *
							Edenian				Nabala			450.4 *
							Edenian		Viru		Rakvere			450.6 *
			Mohawkian				Chatfieldian				Rakvere			451.1 *
					Oandu						452 *
		Sandbian			Keila						Idavere †		453
					Keila		Turinian						453.7 *
					Haljala								453.9
					Haljala								Zahorany †/Vinice	Letna †	456.2 *
				Kukruse	456.4 *
			Whiterockian	Kukruse			Canadian †					Chazyan †/Marmor			457 *
				Uhaku							Aluoja †				457.5 *
										Liben †					458 *
	Middle Ordovician	Darriwilian													458.4
								Dobrotivian							458.5 *
				Lasnamagi				Dobrotivian							458.9 *
				Lasnamagi				Oretanian							459.7 *
				Aseri											460.4 *
				Aseri						Sarka †					461.7 *
				Oeland					Kunda						462.9 *
									Kunda		Valaste †/Hunderum				464.3 *
									Volkhov						Langevoja †/Vaana/Saka	467.1 *
		Dapingian								Klabava †						467.3
								Arenigian								468
					Rangerian											469.1 *
					Rangerian				Billingen							469.3 *
	Early Ordovician	Floian	Ibexian		Blackhillsian							Jeffersonian †				Cassinian †	470
											Latorp †						470.1 *
									Hunneberg								473.7 *
					Tulean	473.9 *
		Tremadocian			Tulean	Ungurian		Tremadocian									477.7
					Stairsian												480.3 *
					Stairsian				Varangu								481.3 *
					Skullrockian				Varangu							Demingian †	482 *
									Pakerort							Demingian †	482.2 *
Cambrian	Furongian	Stage 10							Pakerort		Batyrbaian					Niuchehean	Taoyuanian †	485.4
																		486.3 *
																		486.5
																		487.5
		Jiangshanian														Jiangshanian		489.5
											Aksaian							490.7 *
											Sakian							492.2 *
		Paibian														Paibian		494
		Paibian														Paibian	Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian									Series 3 †					Ayusokkanian	Guzhangian	Wangcunian †	497
		Guzhangian															Guzhangian		499.5
		Drumian														Zhanaarykian	Drumian		500.5
		Drumian														Tuesaian	Drumian		503
		Wuliuan														Tuesaian	Stage 5 †	Wuliuan/Taijangian		504.5
		Wuliuan															Stage 5 †	Wuliuan/Taijangian		505.3
	Series 2	Stage 4																Duyunian		509
																Toyonian				510 *
																Botomian				512.5 *
		Stage 3														Botomian		Nangaoian		514
		Stage 3														Atdabanian		Nangaoian		515.6 *
	Terreneuvian	Stage 2														Tommotian		Meishucunian		521
		Stage 2																		525.5
		Fortunian																		529
		Fortunian																Jinnigian		530.7
																							538.8