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, 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
- 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
- P. L. Gibbard, M. J. Head, and M. J. C. Walker. 2010. Formal ratification of the Quaternary System/Period and the Pleistocene Series/Epoch with a base at 2.58 Ma. Journal of Quaternary Science 25(2):96-102 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
- 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
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 Australia | Ordovician of the Baltic | Ordovician of Ibero-Bohemia | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ordovician | Late Ordovician | Hirnantian | Bolindian | Harju | Porkuni | Kosovian | 443.8 | ||||||||||
Katian | Pirgu | Kralodvorian | Bohdalec † | 445.2 | |||||||||||||
Eastonian | 449 * | ||||||||||||||||
Vormsi | 449.6 * | ||||||||||||||||
Berounian | 449.7 * | ||||||||||||||||
Nabala | Johvi † | 450 * | |||||||||||||||
Viru | Rakvere | 450.6 * | |||||||||||||||
Gisbornian | Oandu | 452 * | |||||||||||||||
Sandbian | Keila | Idavere † | 453 | ||||||||||||||
Haljala | 453.9 | ||||||||||||||||
Zahorany †/Vinice | Letna † | 456.2 * | |||||||||||||||
Kukruse | 456.4 * | ||||||||||||||||
Uhaku | Aluoja † | 457.5 * | |||||||||||||||
Liben † | 458 * | ||||||||||||||||
Middle Ordovician | Darriwilian | Darriwilian | 458.4 | ||||||||||||||
Dobrotivian | 458.5 * | ||||||||||||||||
Lasnamagi | 458.9 * | ||||||||||||||||
Oretanian | 459.7 * | ||||||||||||||||
Aseri | 460.4 * | ||||||||||||||||
Sarka † | 461.7 * | ||||||||||||||||
Oeland | Kunda | 462.9 * | |||||||||||||||
Valaste †/Hunderum | 464.3 * | ||||||||||||||||
Volkhov | Langevoja †/Vaana/Saka | 467.1 * | |||||||||||||||
Dapingian | Yapeenian | Klabava † | 467.3 | ||||||||||||||
Arenigian | 468 | ||||||||||||||||
Castlemainian | 468.5 * | ||||||||||||||||
Billingen | 469.3 * | ||||||||||||||||
Early Ordovician | Floian | Chewtonian | 470 | ||||||||||||||
Latorp † | 470.1 * | ||||||||||||||||
Bendigonian | 471.8 * | ||||||||||||||||
Lancefieldian | 473.5 * | ||||||||||||||||
Hunneberg | 473.7 * | ||||||||||||||||
Tremadocian | Tremadocian | 477.7 | |||||||||||||||
Varangu | 481.3 * | ||||||||||||||||
Pakerort | 482.2 * | ||||||||||||||||
Warendian | 482.8 * | ||||||||||||||||
485.4 * | |||||||||||||||||
486.3 | |||||||||||||||||
486.5 |