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
- 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
- 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
- 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 126150 collections
International Chronostratigraphic Timescale | Ordovician of Ibero-Bohemia | Ordovician of China | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ordovician | Late Ordovician | Hirnantian | Kosovian | Hirnantian | Xiaoxita †/Shikou | Wufeng † | 443.8 | |||||||
Katian | Kralodvorian | Bohdalec † | Chientangkiangian | 445.2 | ||||||||||
Neichianshanian/Hanjiang | 449.5 | |||||||||||||
Berounian | 449.7 * | |||||||||||||
Sandbian | 453 | |||||||||||||
Zahorany †/Vinice | Letna † | 456.2 * | ||||||||||||
Liben † | 458 * | |||||||||||||
Middle Ordovician | Darriwilian | Darriwilian | Guniu †/Hulo | 458.4 | ||||||||||
Dobrotivian | 458.5 * | |||||||||||||
Oretanian | 459.7 * | |||||||||||||
Sarka † | 461.7 * | |||||||||||||
Hunjiang † | Dawan †/Daobaowan/Ningkuo | 466.3 * | ||||||||||||
Dapingian | Klabava † | Dapingian | 467.3 | |||||||||||
Arenigian | 468 | |||||||||||||
Early Ordovician | Floian | Yiyangian | 470 | |||||||||||
Tremadocian | Tremadocian | Xinchangian | 477.7 | |||||||||||
Lianghekou † | 477.9 * | |||||||||||||
485.4 |