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
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	Ordovician of North America					Ordovician of the Baltic				Ordovician of Ibero-Bohemia
Ordovician	Late Ordovician	Hirnantian		Cincinnatian	Gamachian				Harju	Porkuni			Kosovian				443.8
		Katian			Gamachian					Pirgu			Kralodvorian	Bohdalec †			445.2
					Richmondian					Pirgu							446 *
										Vormsi							449.6 *
													Berounian				449.7 *
					Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian											449.8 *
					Maysvillian					Nabala	Johvi †						450 *
					Edenian					Nabala							450.4 *
					Edenian				Viru	Rakvere							450.6 *
				Mohawkian	Chatfieldian					Rakvere							451.1 *
										Oandu							452 *
		Sandbian								Keila	Idavere †						453
					Turinian					Keila							453.7 *
										Haljala							453.9
										Haljala					Zahorany †/Vinice	Letna †	456.2 *
										Kukruse							456.4 *
				Whiterockian		Canadian †	Chazyan †/Marmor			Kukruse							457 *
										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
					Rangerian												469.1 *
					Rangerian					Billingen							469.3 *
	Early Ordovician	Floian		Ibexian	Blackhillsian		Jeffersonian †	Cassinian †									470
											Latorp †						470.1 *
										Hunneberg							473.7 *
					Tulean												473.9 *
		Tremadocian	Ungurian		Tulean								Tremadocian				477.7
					Stairsian												480.3 *
					Stairsian					Varangu							481.3 *
					Skullrockian			Demingian †		Varangu							482 *
								Demingian †		Pakerort							482.2 *
Cambrian	Furongian	Stage 10	Batyrbaian							Pakerort							485.4
																	486.3 *
																	486.5
																	487.5
		Jiangshanian															489.5
			Aksaian														490.7 *
			Sakian														492.2 *
		Paibian	Sakian														494
	Miaolingian	Guzhangian	Ayusokkanian														497
		Guzhangian															499.5
		Drumian	Zhanaarykian														500.5
		Drumian	Tuesaian														503
		Wuliuan	Tuesaian														504.5
		Wuliuan															505.3
	Series 2	Stage 4															509
			Toyonian														510 *
			Botomian														512.5 *
		Stage 3	Botomian														514
		Stage 3	Atdabanian														515.6 *
	Terreneuvian	Stage 2	Tommotian														521
																	525.5