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
- 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
- A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 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
- 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 126689 collections
| International Chronostratigraphic Timescale | Devonian of France | Devonian of Eastern North America | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Devonian | Late Devonian | Famennian | Famennian | Conewangan/Conneautan/Canadaway | 358.9 | ||||||
| Frasnian | Frasnian | West Fallsian/Sonyean | 372.2 | ||||||||
| Middle Devonian | Givetian | Givetian | Geneseean/Taghanican/Tioughniogan | Cazenovian | 382.7 | ||||||
| Eifelian | Couvinien | Southwoodian | 387.7 | ||||||||
| Early Devonian | Emsian | Sawkillian/Deer Parkian | Helderbergian | 393.3 | |||||||
| Pragian | 407.6 | ||||||||||
| Coblencien | 408.2 * | ||||||||||
| Lochkovian | Gedinnine | 410.8 | |||||||||
| 419.2 | |||||||||||