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
- Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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
- 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 |