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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 126762 collections
| International Chronostratigraphic Timescale | Obsolete Carboniferous Ages of China | Silurian of the Baltic | |||
|---|---|---|---|---|---|
| Carboniferous | Pennsylvanian | Gzhelian | Mapingian † | 298.9 | |
| Kasimovian | 303.7 | ||||
| 305.9 | |||||
| Moscovian | 307 | ||||
| Bashkirian | 315.2 | ||||
| Mississippian | Serpukhovian | 323.2 | |||
| Visean | 330.9 | ||||
| Tournaisian | 346.7 | ||||
| Devonian | Late Devonian | Famennian | 358.9 | ||
| Frasnian | 372.2 | ||||
| Middle Devonian | Givetian | 382.7 | |||
| Eifelian | 387.7 | ||||
| Early Devonian | Emsian | 393.3 | |||
| Pragian | 407.6 | ||||
| Lochkovian | 410.8 | ||||
| Silurian | Pridoli | Ohesaare | 419.2 | ||
| Kaugetuma | 421.7 * | ||||
| Ludlow | Ludfordian | Kuressaare | 423 | ||
| Paadla | 423.4 * | ||||
| Gorstian | 425.6 | ||||
| Wenlock | Homerian | Rootsikula | 427.4 | ||
| Jaagarahu | 429.2 * | ||||
| Sheinwoodian | 430.5 | ||||
| Jaani | 431.8 * | ||||
| Llandovery | Telychian | 433.4 | |||
| Adavere | 434 * | ||||
| Aeronian | 438.5 | ||||
| Raikkula | 439.4 * | ||||
| Rhuddanian | 440.8 | ||||
| Juuru | 441.4 * | ||||
| 443.8 | |||||