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

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

Show more time

Show linear time

International Chronostratigraphic Timescale			Ordovician of Ibero-Bohemia				Ordovician of Britain				Ordovician of Australia	Cambrian of Kazakhstan
Ordovician	Late Ordovician	Hirnantian	Kosovian				Ashgill	Hirnantian			Bolindian		443.8
		Katian	Kralodvorian	Bohdalec †				Rawtheyan					445.2
								Cautleyan					448.9 *
								Cautleyan			Eastonian		449 *
								Pusgillian					449.3 *
							Caradoc	Streffordian	Onnian †				449.6 *
			Berounian					Streffordian					449.7 *
								Cheneyan					451.5 *
								Cheneyan			Gisbornian		452 *
								Burrellian					452.7 *
		Sandbian											453
									Actonian †				453.2 *
									Marshbrookian †	Woolstonian †			454.2 *
									Longvillian †				455.2 *
					Zahorany †/Vinice	Letna †							456.2 *
								Aurelucian					456.8 *
									Soudleyan †/Harnagian/Costonian				457.4 *
				Liben †					Soudleyan †/Harnagian/Costonian				458 *
	Middle Ordovician	Darriwilian					Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			Darriwilian		458.4
			Dobrotivian										458.5 *
			Oretanian										459.7 *
								Abereiddian/Early Llanvirn					461.3 *
				Sarka †									461.7 *
		Dapingian		Klabava †							Yapeenian		467.3
			Arenigian										468
							Arenig	Fennian					468.4 *
											Castlemainian		468.5 *
	Early Ordovician	Floian									Chewtonian		470
								Whitlandian			Chewtonian		471.1 *
											Bendigonian		471.8 *
											Lancefieldian		473.5 *
								Moridunian					474.3 *
		Tremadocian	Tremadocian				Tremadoc	Migneintian				Ungurian	477.7
								Cressagian					480.8 *
								Cressagian			Warendian		482.8 *
											Warendian		485 *
Cambrian	Furongian	Stage 10										Batyrbaian	485.4
		Jiangshanian										Batyrbaian	489.5
												Aksaian	490.7 *
												Sakian	492.2 *
		Paibian										Sakian	494
	Miaolingian	Guzhangian										Ayusokkanian	497
		Guzhangian											499.5
		Drumian										Zhanaarykian	500.5
		Drumian										Tuesaian	503
		Wuliuan										Tuesaian	504.5
		Wuliuan											505.3
	Series 2	Stage 4											509
												Toyonian	510 *
												Botomian	512.5 *
		Stage 3										Botomian	514
		Stage 3										Atdabanian	515.6 *
	Terreneuvian	Stage 2										Tommotian	521
													525.5