PBDB Timescale

Cambrian of Kazakhstan

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

There are 15 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 30 collections

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International Chronostratigraphic Timescale			Cambrian of Kazakhstan	Cambrian of Siberia			Cambrian of Britain		Ordovician of China			Ordovician of Australia
Ordovician	Late Ordovician	Hirnantian							Hirnantian	Xiaoxita †/Shikou	Wufeng †	Bolindian	443.8
		Katian							Chientangkiangian			Bolindian	445.2
									Chientangkiangian			Eastonian	449 *
									Neichianshanian/Hanjiang			Eastonian	449.5
												Gisbornian	452 *
		Sandbian										Gisbornian	453
	Middle Ordovician	Darriwilian							Darriwilian	Guniu †/Hulo		Darriwilian	458.4
		Darriwilian							Darriwilian	Hunjiang †	Dawan †/Daobaowan/Ningkuo	Darriwilian	466.3 *
		Dapingian							Dapingian			Yapeenian	467.3
		Dapingian							Dapingian			Castlemainian	468.5 *
	Early Ordovician	Floian							Yiyangian			Chewtonian	470
												Bendigonian	471.8 *
												Lancefieldian	473.5 *
		Tremadocian	Ungurian						Xinchangian				477.7
											Lianghekou †		477.9 *
												Warendian	482.8 *
				Mansian †								Warendian	483.55 *
Cambrian	Furongian	Stage 10	Batyrbaian	Batyrbaian	Tavgian †	Ketyan †/Yurakian	Merioneth	Dolgellian/Trempealeauan					485.4
		Stage 10						Festiniogian					489.2 *
		Jiangshanian											489.5
			Aksaian	Aksaian									490.7 *
			Sakian	Sakian									492.2 *
								Maentwrogian					493.1 *
		Paibian											494
		Paibian				Ensyan †/Maduan/Nganasanian							494.7 *
	Miaolingian	Guzhangian	Ayusokkanian	Ayusokkanian			St Davids						497
		Guzhangian		Mayan/Menevian									499.5
		Drumian	Zhanaarykian										500.5
		Drumian	Tuesaian										503
		Wuliuan	Tuesaian	Amgan/Solvan									504.5
		Wuliuan											505.3
	Series 2	Stage 4					Caerfai						509
			Toyonian	Toyonian	Lenian †								510 *
			Botomian	Botomian									512.5 *
		Stage 3	Botomian	Botomian									514
		Stage 3	Atdabanian	Atdabanian									515.6 *
	Terreneuvian	Stage 2	Tommotian	Tommotian									521
		Stage 2		Nemakit-Daldynian									525.5
		Fortunian		Nemakit-Daldynian	Manykaian †								529
													538.8