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. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
- M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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 | Ammonite Chrons of North America | Ammonite Chrons of Northwest Europe | Central Paratethys Stages | Cretaceous Subepochs | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Neogene | Miocene | Tortonian | Pannonian | 7.246 | ||||||
| Serravallian | Sarmatian | 11.63 | ||||||||
| Badenian | 12.8 * | |||||||||
| Langhian | 13.82 | |||||||||
| Burdigalian | 15.98 | |||||||||
| Aquitanian | 20.44 | |||||||||
| Paleogene | Oligocene | Chattian | 23.03 | |||||||
| Rupelian | 27.82 | |||||||||
| Eocene | Priabonian | 33.9 | ||||||||
| Bartonian | 37.71 | |||||||||
| Lutetian | 41.2 | |||||||||
| Ypresian | 47.8 | |||||||||
| Paleocene | Thanetian | 56 | ||||||||
| Selandian | 59.2 | |||||||||
| Danian | 61.6 | |||||||||
| Cretaceous | Late Cretaceous | Maastrichtian | Senonian | 66 | ||||||
| Campanian | 72.1 | |||||||||
| Santonian | 83.6 | |||||||||
| Coniacian | 86.3 | |||||||||
| Turonian | 89.8 | |||||||||
| Cenomanian | 93.9 | |||||||||
| Early Cretaceous | Albian | Gallic | 100.5 | |||||||
| Aptian | 113 | |||||||||
| Barremian | 121.4 | |||||||||
| Hauterivian | Neocomian | 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 | Epizigzagiceras | Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites | 168.2 | |||||||
| Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense | Humphresianum | 168.4 | ||||||||
| Aalenian | Howelli/Scissum/Westermanni | Concavum/Murchisonae/Opalinum | 170.9 | |||||||
| Early Jurassic | Toarcian | Yakounensis/Hillebrandti/Crassicosta | Levesquei/Variabilis/Bifrons | Thouarsense | 174.7 | |||||
| Planulata | 179.3 * | |||||||||
| Arnioceras arnouldi | 179.8 * | |||||||||
| 180.1 | ||||||||||
| Kanense | 181.3 * | |||||||||
| Serpentinum/Falciferum/Tenuicostatum | 182 | |||||||||
| Carlottense | 182.3 * | |||||||||
| Kunae | 183.5 * | |||||||||
| Pliensbachian | Spinatum/Margaritatus/Davoei/Ibex/Jamesoni | 184.2 | ||||||||
| Freboldi | 185.1 * | |||||||||
| Whiteavesi/Imlayi | Tetraspidoceras | 186.2 * | ||||||||
| 189.2 * | ||||||||||
| Plesechioceras harbledownense/Asteroceras varians/Coroniceras | Canadensis | 190.3 * | ||||||||
| Sinemurian | Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi | 192.9 | ||||||||
| Pseudaetomoceras | Psiloceras | 196.4 * | ||||||||
| Franziceras/Euphyllites | 196.5 * | |||||||||
| Hettangian | Angulata/Liasicus/Planorbis | 199.5 | ||||||||
| 201.4 | ||||||||||