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
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 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 126689 collections

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International Chronostratigraphic Timescale			Cambrian of China		Cambrian of Kazakhstan	Cambrian of West Avalonia
Cambrian	Furongian	Stage 10	Niuchehean	Taoyuanian †	Batyrbaian		485.4
		Jiangshanian	Jiangshanian		Batyrbaian		489.5
					Aksaian		490.7 *
					Sakian		492.2 *
		Paibian	Paibian				494
		Paibian	Paibian	Waergangian †/Youshuanian			494.9 *
	Miaolingian	Guzhangian	Guzhangian	Wangcunian †	Ayusokkanian		497
					Ayusokkanian	Arcadian	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	509
					Toyonian		510 *
					Botomian		512.5 *
		Stage 3	Nangaoian		Botomian		514
					Atdabanian		515.6 *
					Atdabanian	Placentian	517.1
	Terreneuvian	Stage 2	Meishucunian		Tommotian		521
		Stage 2					525.5
		Fortunian					529
		Fortunian	Jinnigian				530.7
							538.8