PBDB Timescale

Ordovician of China

The interval definitions in this timescale are derived from the following sources:

F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
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
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

There are 9 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 98 collections

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International Chronostratigraphic Timescale			Ordovician of China			Cambrian of Kazakhstan	Ten Million Year Bins	Ordovician of Australia	Cambrian of Siberia
Quaternary	Holocene	Meghalayan					Cenozoic 6					0
		Northgrippian										0.0042
		Greenlandian										0.0082
	Pleistocene	Late Pleistocene										0.0117
		Chibanian										0.129
		Calabrian										0.774
		Gelasian										1.8
Neogene	Pliocene	Piacenzian										2.58
	Pliocene	Zanclean										3.6
	Miocene	Messinian										5.333
		Tortonian										7.246
		Serravallian					Cenozoic 5					11.63
		Langhian										13.82
		Burdigalian										15.98
		Aquitanian										20.44
Paleogene	Oligocene	Chattian					Cenozoic 4					23.03
	Oligocene	Rupelian					Cenozoic 4					27.82
	Eocene	Priabonian					Cenozoic 3					33.9
		Bartonian					Cenozoic 3					37.71
		Lutetian					Cenozoic 2					41.2
		Ypresian					Cenozoic 2					47.8
	Paleocene	Thanetian					Cenozoic 1					56
		Selandian										59.2
		Danian										61.6
Cretaceous	Late Cretaceous	Maastrichtian					Cretaceous 8					66
		Campanian					Cretaceous 7					72.1
		Santonian					Cretaceous 6					83.6
		Coniacian										86.3
		Turonian										89.8
		Cenomanian					Cretaceous 5					93.9
	Early Cretaceous	Albian					Cretaceous 4					100.5
		Aptian					Cretaceous 3					113
		Barremian					Cretaceous 2					121.4
		Hauterivian					Cretaceous 2					125.77
		Valanginian					Cretaceous 1					132.6
		Berriasian					Cretaceous 1					139.8
Jurassic	Late Jurassic	Tithonian					Jurassic 6					145
		Kimmeridgian					Jurassic 5					149.2
		Oxfordian										154.8
	Middle Jurassic	Callovian										161.5
		Bathonian					Jurassic 4					165.3
		Bajocian					Jurassic 4					168.2
		Aalenian					Jurassic 3					170.9
	Early Jurassic	Toarcian					Jurassic 3					174.7
		Pliensbachian					Jurassic 2					184.2
		Sinemurian					Jurassic 1					192.9
		Hettangian					Jurassic 1					199.5
Triassic	Late Triassic	Rhaetian					Triassic 4					201.4
		Norian					Triassic 4					208.5
		Carnian					Triassic 3					227
	Middle Triassic	Ladinian					Triassic 2					237
	Middle Triassic	Anisian					Triassic 2					242
	Early Triassic	Olenekian					Triassic 1					247.2
	Early Triassic	Induan					Triassic 1					251.2
Permian	Lopingian	Changhsingian					Permian 4					251.902
	Lopingian	Wuchiapingian										254.14
	Guadalupian	Capitanian										259.51
		Wordian										264.28
		Roadian					Permian 3					266.9
	Cisuralian	Kungurian					Permian 2					273.01
		Artinskian										283.5
		Sakmarian										290.1
		Asselian					Permian 1					293.52
Carboniferous	Pennsylvanian	Gzhelian					Carboniferous 5					298.9
		Kasimovian	303.7				Carboniferous 5
		Moscovian	Carboniferous 4	307
		Bashkirian	Carboniferous 4	315.2
	Mississippian	Serpukhovian	Carboniferous 3	323.2
		Visean	Carboniferous 2	330.9
		Tournaisian	Carboniferous 1	346.7
Devonian	Late Devonian	Famennian	Devonian 5	358.9
	Late Devonian	Frasnian	Devonian 4	372.2
	Middle Devonian	Givetian	Devonian 3	382.7
	Middle Devonian	Eifelian	Devonian 3	387.7
	Early Devonian	Emsian	Devonian 2	393.3
		Pragian	Devonian 1	407.6
		Lochkovian	Devonian 1	410.8
Silurian	Pridoli		Silurian 2	419.2
	Ludlow	Ludfordian		423
	Ludlow	Gorstian		425.6
	Wenlock	Homerian		427.4
	Wenlock	Sheinwoodian		430.5
	Llandovery	Telychian	Silurian 1	433.4
		Aeronian		438.5
		Rhuddanian		440.8
Ordovician	Late Ordovician	Hirnantian	Hirnantian	Xiaoxita †/Shikou	Wufeng †	Ordovician 5	Bolindian	443.8
		Katian	Chientangkiangian				Bolindian	445.2
			Chientangkiangian				Eastonian	449 *
			Neichianshanian/Hanjiang				Eastonian	449.5
							Gisbornian	452 *
		Sandbian				Ordovician 4	Gisbornian	453
	Middle Ordovician	Darriwilian	Darriwilian	Guniu †/Hulo		Ordovician 3	Darriwilian	458.4
		Darriwilian	Darriwilian	Hunjiang †	Dawan †/Daobaowan/Ningkuo	Ordovician 3	Darriwilian	466.3 *
		Dapingian	Dapingian			Ordovician 2	Yapeenian	467.3
		Dapingian	Dapingian				Castlemainian	468.5 *
	Early Ordovician	Floian	Yiyangian				Chewtonian	470
							Bendigonian	471.8 *
							Lancefieldian	473.5 *
		Tremadocian	Xinchangian			Ungurian		Ordovician 1	477.7
					Lianghekou †				477.9 *
							Warendian		482.8 *
							Warendian		Mansian †	483.55 *
Cambrian	Furongian	Stage 10				Batyrbaian	Cambrian 5		Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Jiangshanian				Batyrbaian			Batyrbaian			489.5
						Aksaian			Aksaian			490.7 *
						Sakian			Sakian			492.2 *
		Paibian										494
		Paibian									Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian				Ayusokkanian	Cambrian 4		Ayusokkanian			497
		Guzhangian							Mayan/Menevian			499.5
		Drumian				Zhanaarykian						500.5
		Drumian				Tuesaian						503
		Wuliuan				Tuesaian	Cambrian 3		Amgan/Solvan			504.5
		Wuliuan										505.3
	Series 2	Stage 4										509
						Toyonian			Toyonian	Lenian †		510 *
						Botomian			Botomian			512.5 *
		Stage 3				Botomian	Cambrian 2		Botomian			514
		Stage 3				Atdabanian			Atdabanian			515.6 *
	Terreneuvian	Stage 2				Tommotian			Tommotian			521
		Stage 2							Nemakit-Daldynian			525.5
		Fortunian					Cambrian 1		Nemakit-Daldynian	Manykaian †		529
												538.8