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
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
- J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) 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
| International Chronostratigraphic Timescale | Devonian of Germany | Devonian of France | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Devonian | Late Devonian | Famennian | Wocklum/Dasberg/Hemberg/Nehden | Famennian | 358.9 | ||||||
| Frasnian | Adorf | Frasnian | 372.2 | ||||||||
| Middle Devonian | Givetian | Givetian | Givetian | 382.7 | |||||||
| Eifelian | Eifelian | Couvinien | 387.7 | ||||||||
| Early Devonian | Emsian | Emsian | 393.3 | ||||||||
| Pragian | Siegen | 407.6 | |||||||||
| Coblencien | 408.2 * | ||||||||||
| Lochkovian | Gedinnine | Gedinnine | 410.8 | ||||||||
| 419.2 | |||||||||||