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
- J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) 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
- 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
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 | Permian-Jurassic of New Zealand | Carboniferous of North America | Devonian of Germany | ||||
|---|---|---|---|---|---|---|---|
| Jurassic | Late Jurassic | Tithonian | Oteke | Puaroan | 145 | ||
| Kimmeridgian | 149.2 | ||||||
| Kawhia | Ohauan | 150 | |||||
| Heterian | 154.5 | ||||||
| Oxfordian | 154.8 | ||||||
| Middle Jurassic | Callovian | 161.5 | |||||
| Temaikan | 164.3 | ||||||
| Bathonian | 165.3 | ||||||
| Bajocian | 168.2 | ||||||
| Aalenian | 170.9 | ||||||
| Early Jurassic | Toarcian | 174.7 | |||||
| Herangi | Ururoan | 176 | |||||
| Pliensbachian | 184.2 | ||||||
| Aratauran | 188.9 | ||||||
| Sinemurian | 192.9 | ||||||
| Hettangian | 199.5 | ||||||
| Triassic | Late Triassic | Rhaetian | Balfour | Otapirian | 201.4 | ||
| Norian | Warepan | 208.5 | |||||
| Otamitan | 217 | ||||||
| Oretian | 221 | ||||||
| Carnian | 227 | ||||||
| Gore | Kaihikuan | 227.5 | |||||
| Middle Triassic | Ladinian | 237 | |||||
| Etalian | 238 | ||||||
| Anisian | 242 | ||||||
| Malakovian | 246 | ||||||
| Early Triassic | Olenekian | 247.2 | |||||
| Nelsonian | 249 | ||||||
| Induan | 251.2 | ||||||
| DUrville | Makarewan | 251.5 | |||||
| Permian | Lopingian | Changhsingian | 251.902 | ||||
| Waiitian | 253.2 | ||||||
| Wuchiapingian | 254.14 | ||||||
| Puruhauan | 254.2 | ||||||
| Guadalupian | Capitanian | Aparima | Flettian | 259.51 | |||
| Wordian | 264.28 | ||||||
| Barettian | 266 | ||||||
| Roadian | 266.9 | ||||||
| Cisuralian | Kungurian | 273.01 | |||||
| Mangapirian | 276 | ||||||
| Artinskian | 283.5 | ||||||
| Telfordian | 285 | ||||||
| 288.5 | |||||||
| Sakmarian | 290.1 | ||||||
| Asselian | Bursumian † | 293.52 | |||||
| Carboniferous | Pennsylvanian | Gzhelian | Virgilian | 298.9 | |||
| Kasimovian | Missourian | 303.7 | |||||
| Desmoinesian | 305.9 * | ||||||
| Moscovian | 307 | ||||||
| Atokan | 312.7 * | ||||||
| Bashkirian | 315.2 | ||||||
| Morrowan | 318.4 * | ||||||
| Mississippian | Serpukhovian | Chesterian | 323.2 | ||||
| Visean | 330.9 | ||||||
| Meramecian | 335.8 * | ||||||
| Osagean | 343.1 * | ||||||
| Tournaisian | 346.7 | ||||||
| Kinderhookian | 351.9 * | ||||||
| Devonian | Late Devonian | Famennian | Wocklum/Dasberg/Hemberg/Nehden | 358.9 | |||
| Frasnian | Adorf | 372.2 | |||||
| Middle Devonian | Givetian | Givetian | 382.7 | ||||
| Eifelian | Eifelian | 387.7 | |||||
| Early Devonian | Emsian | Emsian | 393.3 | ||||
| Pragian | Siegen | 407.6 | |||||
| Lochkovian | Gedinnine | 410.8 | |||||
| 419.2 | |||||||