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 Australia	Cambrian Epochs	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	Late Cambrian		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	Middle Cambrian					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			Early Cambrian						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