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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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
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	Ordovician of North America					Cambrian Epochs	Cambrian of North America		Ordovician of Ibero-Bohemia
Ordovician	Late Ordovician	Hirnantian		Cincinnatian	Gamachian							Kosovian				443.8
		Katian			Gamachian							Kralodvorian	Bohdalec †			445.2
					Richmondian							Kralodvorian				446 *
					Richmondian							Berounian				449.7 *
					Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian										449.8 *
					Edenian											450.4 *
				Mohawkian	Chatfieldian											451.1 *
		Sandbian			Chatfieldian											453
					Turinian											453.7 *
					Turinian									Zahorany †/Vinice	Letna †	456.2 *
				Whiterockian		Canadian †	Chazyan †/Marmor							Zahorany †/Vinice		457 *
													Liben †			458 *
	Middle Ordovician	Darriwilian														458.4
												Dobrotivian				458.5 *
												Oretanian				459.7 *
													Sarka †			461.7 *
		Dapingian											Klabava †			467.3
												Arenigian				468
					Rangerian											469.1 *
	Early Ordovician	Floian		Ibexian	Blackhillsian		Jeffersonian †	Cassinian †								470
		Floian			Tulean											473.9 *
		Tremadocian	Ungurian		Tulean							Tremadocian				477.7
					Stairsian											480.3 *
					Skullrockian			Demingian †								482 *
Cambrian	Furongian	Stage 10	Batyrbaian		Skullrockian				Late Cambrian		Franconian †/Dresbachian/Millardan					485.4
		Stage 10								Sunwaptan						487.5
		Jiangshanian														489.5
			Aksaian													490.7 *
			Sakian													492.2 *
										Steptoean						493 *
		Paibian								Steptoean						494
	Miaolingian	Guzhangian	Ayusokkanian						Middle Cambrian	Marjumian	Albertian †					497
		Guzhangian														499.5
		Drumian	Zhanaarykian													500.5
		Drumian	Tuesaian													503
		Wuliuan	Tuesaian							Topazan						504.5
										Topazan						505.3
										Delamaran						506.5
	Series 2	Stage 4							Early Cambrian		Waucoban †					509
			Toyonian													510 *
			Toyonian							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