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
- M. Freudenthal. 2006. Mammal Paleogene zones. personal communication 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
There are 59 timescales which overlap this one. show
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 125932 collections
| International Chronostratigraphic Timescale | Ten Million Year Bins | Ammonite Chrons of Northwest Europe | |||||
|---|---|---|---|---|---|---|---|
| Jurassic | Late Jurassic | Tithonian | Jurassic 6 | 145 | |||
| Kimmeridgian | Jurassic 5 | 149.2 | |||||
| Oxfordian | 154.8 | ||||||
| Middle Jurassic | Callovian | 161.5 | |||||
| Bathonian | Jurassic 4 | 165.3 | |||||
| Bajocian | Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites | 168.2 | |||||
| Humphresianum | 168.4 | ||||||
| Aalenian | Jurassic 3 | Concavum/Murchisonae/Opalinum | 170.9 | ||||
| Early Jurassic | Toarcian | Levesquei/Variabilis/Bifrons | Thouarsense | 174.7 | |||
| 180.1 | |||||||
| Serpentinum/Falciferum/Tenuicostatum | 182 | ||||||
| Pliensbachian | Jurassic 2 | Spinatum/Margaritatus/Davoei/Ibex/Jamesoni | 184.2 | ||||
| Sinemurian | Jurassic 1 | Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi | 192.9 | ||||
| Hettangian | Angulata/Liasicus/Planorbis | 199.5 | |||||
| 201.4 | |||||||