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
- 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
- D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 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
- 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
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 126163 collections
International Chronostratigraphic Timescale | Ammonite Chrons of North America | Permian-Jurassic of New Zealand | Ammonite Chrons of Northwest Europe | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 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 | ||||||||||
Herangi | Ururoan | 176 | |||||||||||||
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 * | |||||||||||||
Aratauran | 188.9 | ||||||||||||||
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 |