PBDB Timescale

Cambrian of China

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 12 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 1048 collections

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International Chronostratigraphic Timescale			Cambrian of China		Ordovician of the Baltic				Cambrian of West Avalonia	Cambrian Epochs	Cambrian of Kazakhstan
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				Hunneberg					Ungurian	477.7
						Varangu						481.3 *
						Pakerort						482.2 *
Cambrian	Furongian	Stage 10	Niuchehean	Taoyuanian †		Pakerort				Late Cambrian	Batyrbaian	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	Guzhangian	Wangcunian †						Middle Cambrian	Ayusokkanian	497
									Arcadian		Ayusokkanian	498.4
												499.5
		Drumian	Drumian								Zhanaarykian	500.5
		Drumian	Drumian								Tuesaian	503
		Wuliuan	Wuliuan/Taijangian								Tuesaian	504.5
		Wuliuan	Wuliuan/Taijangian									505.3
	Series 2	Stage 4	Duyunian						Branchian	Early Cambrian		509
											Toyonian	510 *
											Botomian	512.5 *
		Stage 3	Nangaoian								Botomian	514
											Atdabanian	515.6 *
									Placentian		Atdabanian	517.1
	Terreneuvian	Stage 2	Meishucunian								Tommotian	521
		Stage 2										525.5
		Fortunian										529
		Fortunian	Jinnigian									530.7
												538.8