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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 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 China		Ordovician of the Baltic				Cambrian Epochs
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 *
Cambrian	Furongian	Stage 10	Batyrbaian	Niuchehean	Taoyuanian †		Pakerort			Late Cambrian	485.4
											486.3 *
											486.5
		Jiangshanian		Jiangshanian							489.5
			Aksaian								490.7 *
			Sakian								492.2 *
		Paibian		Paibian							494
		Paibian		Paibian	Waergangian †/Youshuanian						494.9 *
	Miaolingian	Guzhangian	Ayusokkanian	Guzhangian	Wangcunian †					Middle Cambrian	497
		Guzhangian		Guzhangian							499.5
		Drumian	Zhanaarykian	Drumian							500.5
		Drumian	Tuesaian	Drumian							503
		Wuliuan	Tuesaian	Wuliuan/Taijangian							504.5
		Wuliuan		Wuliuan/Taijangian							505.3
	Series 2	Stage 4		Duyunian						Early Cambrian	509
			Toyonian								510 *
			Botomian								512.5 *
		Stage 3	Botomian	Nangaoian							514
		Stage 3	Atdabanian	Nangaoian							515.6 *
	Terreneuvian	Stage 2	Tommotian	Meishucunian							521
		Stage 2									525.5
		Fortunian									529
		Fortunian		Jinnigian							530.7
											538.8