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
- 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
- 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
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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 126568 collections
International Chronostratigraphic Timescale | Devonian Subages | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Devonian | Late Devonian | Famennian | Late Famennian | 358.9 | |||||||
Middle Famennian | 365.3 * | ||||||||||
Early Famennian | 368.5 * | ||||||||||
Frasnian | Late Frasnian | 372.2 | |||||||||
Middle Frasnian | 375.4 * | ||||||||||
Early Frasnian | 379.3 * | ||||||||||
Middle Devonian | Givetian | Late Givetian | 382.7 | ||||||||
Middle Givetian | 383.7 * | ||||||||||
Early Givetian | 385.9 * | ||||||||||
Eifelian | Late Eifelian | 387.7 | |||||||||
Early Eifelian | 390.3 * | ||||||||||
Early Devonian | Emsian | Late Emsian | 393.3 | ||||||||
Early Emsian | 398.3 * | ||||||||||
Pragian | Pragian | 407.6 | |||||||||
Lochkovian | Late Lochkovian | 410.8 | |||||||||
Middle Lochkovian | 412.8 * | ||||||||||
Early Lochkovian | 415.6 * | ||||||||||
419.2 |