PBDB Interval

International Chronostratigraphic Timescale

The interval definitions in this timescale are derived from the following sources:

K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view

There are 59 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 127751 collections

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International Chronostratigraphic Timescale			Cambrian of China		Cambrian of Kazakhstan	Cambrian of Australia	Cambrian Epochs	Ten Million Year Bins	Cambrian of West Avalonia	Cambrian of Siberia
Cambrian	Furongian	Stage 10	Niuchehean	Taoyuanian †	Batyrbaian	Datsonian	Late Cambrian	Cambrian 5		Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Stage 10	Niuchehean			Payntonian							486.8 *
		Jiangshanian	Jiangshanian			Iverian							489.5
					Aksaian					Aksaian			490.7 *
					Sakian					Sakian			492.2 *
		Paibian	Paibian			Idamean							494
												Ensyan †/Maduan/Nganasanian	494.7 *
				Waergangian †/Youshuanian								Ensyan †/Maduan/Nganasanian	494.9 *
	Miaolingian	Guzhangian	Guzhangian	Wangcunian †	Ayusokkanian	Mindyallan	Middle Cambrian	Cambrian 4		Ayusokkanian			497
						Mindyallan			Arcadian				498.4
						Boomerangian							499
						Boomerangian				Mayan/Menevian			499.5
		Drumian	Drumian		Zhanaarykian	Undillan							500.5
		Drumian	Drumian		Tuesaian	Floran							503
		Wuliuan	Wuliuan/Taijangian		Tuesaian	Templetonian		Cambrian 3		Amgan/Solvan			504.5
						Templetonian							505.3
						Ordian							507.8 *
	Series 2	Stage 4	Duyunian				Early Cambrian		Branchian				509
					Toyonian					Toyonian	Lenian †		510 *
					Toyonian					Toyonian			510.8 *
					Botomian					Botomian			512.5 *
		Stage 3	Nangaoian		Botomian			Cambrian 2		Botomian			514
					Atdabanian					Atdabanian			515.6 *
					Atdabanian				Placentian	Atdabanian			517.1
	Terreneuvian	Stage 2	Meishucunian		Tommotian					Tommotian			521
		Stage 2								Nemakit-Daldynian			525.5
		Fortunian						Cambrian 1			Manykaian †		529
		Fortunian	Jinnigian					Cambrian 1			Manykaian †		530.7
													538.8