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
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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 126152 collections
International Chronostratigraphic Timescale | Ordovician of Ibero-Bohemia | Ten Million Year Bins | Cambrian of Kazakhstan | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Ordovician | Late Ordovician | Hirnantian | Kosovian | Ordovician 5 | 443.8 | |||||||
Katian | Kralodvorian | Bohdalec † | 445.2 | |||||||||
Berounian | 449.7 * | |||||||||||
Sandbian | Ordovician 4 | 453 | ||||||||||
Zahorany †/Vinice | Letna † | 456.2 * | ||||||||||
Liben † | 458 * | |||||||||||
Middle Ordovician | Darriwilian | Ordovician 3 | 458.4 | |||||||||
Dobrotivian | 458.5 * | |||||||||||
Oretanian | 459.7 * | |||||||||||
Sarka † | 461.7 * | |||||||||||
Dapingian | Klabava † | Ordovician 2 | 467.3 | |||||||||
Arenigian | 468 | |||||||||||
Early Ordovician | Floian | 470 | ||||||||||
Tremadocian | Tremadocian | Ordovician 1 | Ungurian | 477.7 | ||||||||
485.4 |