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
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 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			Ordovician of Australia	Ordovician of Ibero-Bohemia				Ordovician of North America
Ordovician	Late Ordovician	Hirnantian	Hirnantian	Xiaoxita †/Shikou	Wufeng †	Bolindian	Kosovian				Cincinnatian	Gamachian				443.8
		Katian	Chientangkiangian				Kralodvorian	Bohdalec †				Gamachian				445.2
												Richmondian				446 *
						Eastonian										449 *
			Neichianshanian/Hanjiang													449.5
							Berounian									449.7 *
												Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian			449.8 *
												Edenian				450.4 *
											Mohawkian	Chatfieldian				451.1 *
						Gisbornian										452 *
		Sandbian														453
												Turinian				453.7 *
									Zahorany †/Vinice	Letna †		Turinian				456.2 *
									Zahorany †/Vinice		Whiterockian		Canadian †	Chazyan †/Marmor		457 *
								Liben †								458 *
	Middle Ordovician	Darriwilian	Darriwilian	Guniu †/Hulo		Darriwilian										458.4
							Dobrotivian									458.5 *
							Oretanian									459.7 *
								Sarka †								461.7 *
				Hunjiang †	Dawan †/Daobaowan/Ningkuo			Sarka †								466.3 *
		Dapingian	Dapingian			Yapeenian		Klabava †								467.3
						Yapeenian	Arenigian									468
						Castlemainian										468.5 *
						Castlemainian						Rangerian				469.1 *
	Early Ordovician	Floian	Yiyangian			Chewtonian					Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
						Bendigonian										471.8 *
						Lancefieldian										473.5 *
												Tulean				473.9 *
		Tremadocian	Xinchangian				Tremadocian									477.7
					Lianghekou †											477.9 *
												Stairsian				480.3 *
												Skullrockian			Demingian †	482 *
						Warendian									Demingian †	482.8 *
Cambrian	Furongian	Stage 10														485.4
																487.5