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 China		Ordovician of the Baltic
Ordovician	Late Ordovician	Hirnantian							Harju	Porkuni			443.8
		Katian								Pirgu			445.2
										Vormsi			449.6 *
										Nabala	Johvi †		450 *
									Viru	Rakvere			450.6 *
										Oandu			452 *
		Sandbian								Keila	Idavere †		453
										Haljala			453.9
										Kukruse			456.4 *
										Uhaku	Aluoja †		457.5 *
	Middle Ordovician	Darriwilian								Uhaku			458.4
										Lasnamagi			458.9 *
										Aseri			460.4 *
									Oeland	Kunda			462.9 *
										Kunda	Valaste †/Hunderum		464.3 *
										Volkhov		Langevoja †/Vaana/Saka	467.1 *
		Dapingian								Volkhov			467.3
		Dapingian								Billingen			469.3 *
	Early Ordovician	Floian											470
											Latorp †		470.1 *
										Hunneberg			473.7 *
		Tremadocian	Ungurian							Hunneberg			477.7
										Varangu			481.3 *
										Pakerort			482.2 *
				Mansian †									483.55 *
Cambrian	Furongian	Stage 10	Batyrbaian	Batyrbaian	Tavgian †	Ketyan †/Yurakian	Niuchehean	Taoyuanian †					485.4
													486.3 *
													486.5
		Jiangshanian					Jiangshanian						489.5
			Aksaian	Aksaian									490.7 *
			Sakian	Sakian									492.2 *
		Paibian					Paibian						494
						Ensyan †/Maduan/Nganasanian							494.7 *
						Ensyan †/Maduan/Nganasanian		Waergangian †/Youshuanian					494.9 *
	Miaolingian	Guzhangian	Ayusokkanian	Ayusokkanian			Guzhangian	Wangcunian †					497
		Guzhangian		Mayan/Menevian			Guzhangian						499.5
		Drumian	Zhanaarykian				Drumian						500.5
		Drumian	Tuesaian				Drumian						503
		Wuliuan	Tuesaian	Amgan/Solvan			Wuliuan/Taijangian						504.5
		Wuliuan					Wuliuan/Taijangian						505.3
	Series 2	Stage 4					Duyunian						509
			Toyonian	Toyonian	Lenian †								510 *
			Botomian	Botomian									512.5 *
		Stage 3	Botomian	Botomian			Nangaoian						514
		Stage 3	Atdabanian	Atdabanian			Nangaoian						515.6 *
	Terreneuvian	Stage 2	Tommotian	Tommotian			Meishucunian						521
		Stage 2		Nemakit-Daldynian									525.5
		Fortunian			Manykaian †								529
		Fortunian			Manykaian †		Jinnigian						530.7
													538.8