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
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 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.

This timescale is used in the definition of 126734 collections

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International Chronostratigraphic Timescale			Cambrian of Australia	Cambrian of Kazakhstan	Ten Million Year Bins	Cambrian of West Avalonia
Cambrian	Furongian	Stage 10	Datsonian	Batyrbaian	Cambrian 5		485.4
		Stage 10	Payntonian				486.8 *
		Jiangshanian	Iverian				489.5
				Aksaian			490.7 *
				Sakian			492.2 *
		Paibian	Idamean	Sakian			494
	Miaolingian	Guzhangian	Mindyallan	Ayusokkanian	Cambrian 4		497
			Mindyallan			Arcadian	498.4
			Boomerangian				499
			Boomerangian				499.5
		Drumian	Undillan	Zhanaarykian			500.5
		Drumian	Floran	Tuesaian			503
		Wuliuan	Templetonian	Tuesaian	Cambrian 3		504.5
			Templetonian				505.3
			Ordian				507.8 *
	Series 2	Stage 4				Branchian	509
				Toyonian			510 *
				Toyonian			510.8 *
				Botomian			512.5 *
		Stage 3		Botomian	Cambrian 2		514
				Atdabanian			515.6 *
				Atdabanian		Placentian	517.1
	Terreneuvian	Stage 2		Tommotian			521
		Stage 2					525.5
		Fortunian			Cambrian 1		529
							538.8