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. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 | Paleogene Mammal Ages of Asia | Obsolete Carboniferous Ages of China | Silurian of the Baltic | ||||
|---|---|---|---|---|---|---|---|
| Paleogene | Oligocene | Chattian | Tabenbulakian | Hsandagolian | 23.03 | ||
| Rupelian | Kekeamuan | 27.82 | |||||
| Eocene | Priabonian | Houldjinian/Ergilian/Ulangochuian | 33.9 | ||||
| Bartonian | Sharamurunian/Irdinmanhan/Arshantan | 37.71 | |||||
| Lutetian | 41.2 | ||||||
| Ypresian | Bumbanian | 47.8 | |||||
| Paleocene | Thanetian | Gashatan | 56 | ||||
| Selandian | 59.2 | ||||||
| Danian | 61.6 | ||||||
| Cretaceous | Late Cretaceous | Maastrichtian | 66 | ||||
| Campanian | 72.1 | ||||||
| Santonian | 83.6 | ||||||
| Coniacian | 86.3 | ||||||
| Turonian | 89.8 | ||||||
| Cenomanian | 93.9 | ||||||
| Early Cretaceous | Albian | 100.5 | |||||
| Aptian | 113 | ||||||
| Barremian | 121.4 | ||||||
| Hauterivian | 125.77 | ||||||
| Valanginian | 132.6 | ||||||
| Berriasian | 139.8 | ||||||
| Jurassic | Late Jurassic | Tithonian | 145 | ||||
| Kimmeridgian | 149.2 | ||||||
| Oxfordian | 154.8 | ||||||
| Middle Jurassic | Callovian | 161.5 | |||||
| Bathonian | 165.3 | ||||||
| Bajocian | 168.2 | ||||||
| Aalenian | 170.9 | ||||||
| Early Jurassic | Toarcian | 174.7 | |||||
| Pliensbachian | 184.2 | ||||||
| Sinemurian | 192.9 | ||||||
| Hettangian | 199.5 | ||||||
| Triassic | Late Triassic | Rhaetian | 201.4 | ||||
| Norian | 208.5 | ||||||
| Carnian | 227 | ||||||
| Middle Triassic | Ladinian | 237 | |||||
| Anisian | 242 | ||||||
| Early Triassic | Olenekian | 247.2 | |||||
| Induan | 251.2 | ||||||
| Permian | Lopingian | Changhsingian | 251.902 | ||||
| Wuchiapingian | 254.14 | ||||||
| Guadalupian | Capitanian | 259.51 | |||||
| Wordian | 264.28 | ||||||
| Roadian | 266.9 | ||||||
| Cisuralian | Kungurian | 273.01 | |||||
| Artinskian | 283.5 | ||||||
| Sakmarian | 290.1 | ||||||
| Asselian | 293.52 | ||||||
| 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 | |||||||