Ordovician of Ibero-Bohemia
The interval definitions in this timescale are derived from the following sources:
- 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
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
There are 9 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 532 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 | ||||||||||