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
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
- F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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.
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 126568 collections
| International Chronostratigraphic Timescale | Devonian of Germany | Devonian of Czechoslovakia | Devonian Subages | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Devonian | Late Devonian | Famennian | Wocklum/Dasberg/Hemberg/Nehden | Late Famennian | 358.9 | |||||
| Middle Famennian | 365.3 * | |||||||||
| Early Famennian | 368.5 * | |||||||||
| Frasnian | Adorf | Late Frasnian | 372.2 | |||||||
| Middle Frasnian | 375.4 * | |||||||||
| Early Frasnian | 379.3 * | |||||||||
| Middle Devonian | Givetian | Givetian | Srbsko | Late Givetian | 382.7 | |||||
| Middle Givetian | 383.7 * | |||||||||
| Early Givetian | 385.9 * | |||||||||
| Eifelian | Eifelian | Chotec | Late Eifelian | 387.7 | ||||||
| Early Eifelian | 390.3 * | |||||||||
| Early Devonian | Emsian | Emsian | Daleje/Zlichovian | Late Emsian | 393.3 | |||||
| Early Emsian | 398.3 * | |||||||||
| Pragian | Siegen | Pragian | Pragian | 407.6 | ||||||
| Lochkovian | Gedinnine | Lochkovian | Late Lochkovian | 410.8 | ||||||
| Middle Lochkovian | 412.8 * | |||||||||
| Early Lochkovian | 415.6 * | |||||||||
| 419.2 | ||||||||||