PBDB Timescale

Ordovician of Ibero-Bohemia

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
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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 532 collections

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International Chronostratigraphic Timescale			Ordovician of Ibero-Bohemia				Ordovician of Australia	Ordovician of China			Ordovician of North America
Ordovician	Late Ordovician	Hirnantian	Kosovian				Bolindian	Hirnantian	Xiaoxita †/Shikou	Wufeng †	Cincinnatian	Gamachian				443.8
		Katian	Kralodvorian	Bohdalec †				Chientangkiangian				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	Darriwilian	Guniu †/Hulo							458.4
			Dobrotivian													458.5 *
			Oretanian													459.7 *
				Sarka †												461.7 *
				Sarka †					Hunjiang †	Dawan †/Daobaowan/Ningkuo						466.3 *
		Dapingian		Klabava †			Yapeenian	Dapingian								467.3
			Arenigian				Yapeenian									468
							Castlemainian									468.5 *
							Castlemainian					Rangerian				469.1 *
	Early Ordovician	Floian					Chewtonian	Yiyangian			Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
							Bendigonian									471.8 *
							Lancefieldian									473.5 *
												Tulean				473.9 *
		Tremadocian	Tremadocian					Xinchangian								477.7
										Lianghekou †						477.9 *
												Stairsian				480.3 *
												Skullrockian			Demingian †	482 *
							Warendian								Demingian †	482.8 *
Cambrian	Furongian	Stage 10														485.4
																487.5