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
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
F. M. Gradstein, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Neogene Mammal Ages of China	Mesozoic Subages
Quaternary	Pleistocene	Late Pleistocene				Nihewanian			0.0117
		Chibanian							0.129
		Calabrian							0.774
		Gelasian							1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Yushean			2.58
		Zanclean				Yushean			3.6
		Zanclean				Baodean			4.9
	Miocene	Messinian							5.333
		Tortonian							7.246
		Tortonian				Tunggurian			11.1
		Serravallian				Tunggurian			11.63
		Langhian				Shanwangian			13.82
		Burdigalian				Shanwangian			15.98
		Burdigalian				Xiejiaan			16.9
		Aquitanian				Xiejiaan			20.44
Paleogene	Oligocene	Chattian							23.03
	Oligocene	Rupelian							27.82
	Eocene	Priabonian							33.9
		Bartonian							37.71
		Lutetian							41.2
		Ypresian							47.8
	Paleocene	Thanetian							56
		Selandian							59.2
		Danian							61.6
Cretaceous	Late Cretaceous	Maastrichtian					Late Maastrichtian/Early Maastrichtian		66
		Campanian					Late Campanian/Middle Campanian/Early Campanian		72.1
		Santonian					Late Santonian/Middle Santonian/Early Santonian		83.6
		Coniacian					Late Coniacian/Middle Coniacian/Early Coniacian		86.3
		Turonian					Late Turonian/Middle Turonian/Early Turonian		89.8
		Cenomanian					Late Cenomanian/Middle Cenomanian/Early Cenomanian		93.9
	Early Cretaceous	Albian					Late Albian		100.5
							Middle Albian		106.2 *
							Early Albian		109.9 *
		Aptian					Late Aptian		113
		Aptian					Early Aptian		119.5 *
		Barremian					Late Barremian/Early Barremian		121.4
		Hauterivian					Late Hauterivian/Early Hauterivian		125.77
		Valanginian					Late Valanginian/Early Valanginian		132.6
		Berriasian					Late Berriasian		139.8
							Middle Berriasian		140.6 *
							Early Berriasian		142.7 *
Jurassic	Late Jurassic	Tithonian					Late Tithonian	Middle Tithonian	145
		Tithonian					Early Tithonian	Middle Tithonian	146.3 *
		Kimmeridgian					Late Kimmeridgian		149.2
		Kimmeridgian					Early Kimmeridgian		152.2 *
		Oxfordian					Late Oxfordian	Middle Oxfordian/Early Oxfordian	154.8
		Oxfordian						Middle Oxfordian/Early Oxfordian	157.9 *
	Middle Jurassic	Callovian					Late Callovian/Middle Callovian/Early Callovian		161.5
		Bathonian					Late Bathonian/Middle Bathonian/Early Bathonian		165.3
		Bajocian					Late Bajocian		168.2
		Bajocian					Early Bajocian		168.6 *
		Aalenian					Late Aalenian/Middle Aalenian/Early Aalenian		170.9
	Early Jurassic	Toarcian					Late Toarcian		174.7
							Middle Toarcian		180.4 *
							Early Toarcian		182.9 *
		Pliensbachian					Late Pliensbachian/Early Pliensbachian		184.2
		Sinemurian					Late Sinemurian/Early Sinemurian		192.9
		Hettangian					Late Hettangian/Middle Hettangian/Early Hettangian		199.5
Triassic	Late Triassic	Rhaetian							201.4
		Norian					Sevatian		208.5
							Alaunian		213.2 *
							Lacian		216.7 *
		Carnian					Tuvalian		227
		Carnian					Julian		233.4 *
	Middle Triassic	Ladinian		Longobardian	237
		Ladinian		Fassanian	239.7 *
		Anisian		Illyrian	242
				Pelsonian	243.8 *
				Bithynian	244.7 *
				Aegean	245.5 *
	Early Triassic	Olenekian		Spathian	247.2
		Olenekian		Smithian	248.9 *
		Induan		Dienerian	251.2
		Induan		Griesbachian	251.4 *
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	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	Niuchehean			Taoyuanian †	485.4
		Jiangshanian	Jiangshanian				489.5
		Paibian	Paibian				494
		Paibian	Paibian			Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian	Series 3 †			Guzhangian	Wangcunian †	497
		Drumian				Drumian	Wangcunian †	500.5
		Wuliuan			Stage 5 †	Wuliuan/Taijangian		504.5
	Series 2	Stage 4				Duyunian		509
	Series 2	Stage 3				Nangaoian		514
	Terreneuvian	Stage 2				Meishucunian		521
		Fortunian				Meishucunian		529
		Fortunian				Jinnigian		530.7
									538.8