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
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 126778 collections
| International Chronostratigraphic Timescale | Permian Subages of Germany | Carboniferous of Western Europe | Silurian of the Baltic | ||||
|---|---|---|---|---|---|---|---|
| Permian | Lopingian | Changhsingian | Buntsandstein | 251.902 | |||
| Wuchiapingian | 254.14 | ||||||
| Guadalupian | Capitanian | Ohre/Aller | 259.51 | ||||
| Wordian | Leine | 264.28 | |||||
| Roadian | 266.9 | ||||||
| Cisuralian | Kungurian | 273.01 | |||||
| Artinskian | 283.5 | ||||||
| Sakmarian | 290.1 | ||||||
| Asselian | 293.52 | ||||||
| Kuzel | 297.7 | ||||||
| Carboniferous | Pennsylvanian | Gzhelian | 298.9 | ||||
| Stephanian | Stephanian C | 300.3 * | |||||
| Stephanian B | 300.9 * | ||||||
| Stephanian A | 301.4 * | ||||||
| Kasimovian | 303.7 | ||||||
| Cantabrian | 305 * | ||||||
| Moscovian | 307 | ||||||
| Westphalian | Westphalian D | 307.4 * | |||||
| Westphalian C | 309.8 | ||||||
| Westphalian B | 314.6 | ||||||
| Bashkirian | 315.2 | ||||||
| Westphalian A | 317 * | ||||||
| Namurian | Yeadonian | 318.8 * | |||||
| Marsdenian | 320.2 * | ||||||
| Kinderscoutian | 321.5 * | ||||||
| Alportian | 322 * | ||||||
| Chokierian | 323.1 * | ||||||
| Mississippian | Serpukhovian | 323.2 | |||||
| Arnsbergian | 324 * | ||||||
| Pendleian | 327.4 * | ||||||
| Visean | Warnantian | Brigantian † | 330.9 | ||||
| Livian | Asbian † | 336.3 * | |||||
| Moliniacian | Holkerian †/Arundian/Chadian | 340.2 * | |||||
| Tournaisian | Ivorian | 346.7 | |||||
| Hastarian | 353.7 * | ||||||
| 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 | |||||||