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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 Australia	Ordovician of the Baltic				Cambrian of North America		Ordovician of Ibero-Bohemia
Ordovician	Late Ordovician	Hirnantian			Harju	Porkuni					Kosovian				443.8
		Katian				Pirgu					Kralodvorian	Bohdalec †			445.2
						Vormsi					Kralodvorian				449.6 *
						Vormsi					Berounian				449.7 *
						Nabala	Johvi †								450 *
					Viru	Rakvere									450.6 *
						Oandu									452 *
		Sandbian				Keila	Idavere †								453
						Haljala									453.9
						Haljala							Zahorany †/Vinice	Letna †	456.2 *
						Kukruse									456.4 *
						Uhaku	Aluoja †								457.5 *
												Liben †			458 *
	Middle Ordovician	Darriwilian													458.4
											Dobrotivian				458.5 *
						Lasnamagi					Dobrotivian				458.9 *
						Lasnamagi					Oretanian				459.7 *
						Aseri									460.4 *
						Aseri						Sarka †			461.7 *
					Oeland	Kunda									462.9 *
						Kunda	Valaste †/Hunderum								464.3 *
						Volkhov		Langevoja †/Vaana/Saka							467.1 *
		Dapingian										Klabava †			467.3
											Arenigian				468
						Billingen									469.3 *
	Early Ordovician	Floian													470
							Latorp †								470.1 *
						Hunneberg									473.7 *
		Tremadocian	Ungurian			Hunneberg					Tremadocian				477.7
						Varangu									481.3 *
						Pakerort									482.2 *
Cambrian	Furongian	Stage 10	Batyrbaian	Datsonian		Pakerort				Franconian †/Dresbachian/Millardan					485.4
															486.3 *
															486.5
				Payntonian											486.8 *
				Payntonian					Sunwaptan						487.5
		Jiangshanian		Iverian											489.5
			Aksaian												490.7 *
			Sakian												492.2 *
									Steptoean						493 *
		Paibian		Idamean					Steptoean						494
	Miaolingian	Guzhangian	Ayusokkanian	Mindyallan					Marjumian	Albertian †					497
			Ayusokkanian	Boomerangian											499
				Boomerangian											499.5
		Drumian	Zhanaarykian	Undillan											500.5
		Drumian	Tuesaian	Floran											503
		Wuliuan	Tuesaian	Templetonian					Topazan						504.5
									Topazan						505.3
									Delamaran						506.5
				Ordian											507.8 *
	Series 2	Stage 4								Waucoban †					509
			Toyonian												510 *
															510.8 *
									Dyeran						511 *
			Botomian												512.5 *
		Stage 3													514
									Montezuman						514.8 *
			Atdabanian						Montezuman						515.6 *
			Atdabanian						Begadean						519.9 *
	Terreneuvian	Stage 2	Tommotian												521
		Stage 2													525.5
		Fortunian													529
															538.8