Cressagian age
485 - 480.8 Ma
The definition of this interval in the timescale Ordovician of Britain is taken from the following source:
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
The top and bottom ages 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.
There are intervals in 8 timescales which overlap this one. show
This interval is used in the definition of 7 collections
A total of 1632 collections with 7460 occurrences lie within this time span
| International Chronostratigraphic Timescale | Ordovician of Britain | ||||||
|---|---|---|---|---|---|---|---|
| Ordovician | Late Ordovician | Hirnantian | Ashgill | Hirnantian | 443.8 | ||
| Katian | Rawtheyan | 445.2 | |||||
| Cautleyan | 448.9 * | ||||||
| Pusgillian | 449.3 * | ||||||
| Caradoc | Streffordian | Onnian † | 449.6 * | ||||
| Cheneyan | 451.5 * | ||||||
| Burrellian | 452.7 * | ||||||
| Sandbian | 453 | ||||||
| Actonian † | 453.2 * | ||||||
| Marshbrookian † | Woolstonian † | 454.2 * | |||||
| Longvillian † | 455.2 * | ||||||
| Aurelucian | 456.8 * | ||||||
| Soudleyan †/Harnagian/Costonian | 457.4 * | ||||||
| Middle Ordovician | Darriwilian | Llanvirn | Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn | 458.4 | |||
| Abereiddian/Early Llanvirn | 461.3 * | ||||||
| Dapingian | 467.3 | ||||||
| Arenig | Fennian | 468.4 * | |||||
| Early Ordovician | Floian | 470 | |||||
| Whitlandian | 471.1 * | ||||||
| Moridunian | 474.3 * | ||||||
| Tremadocian | Tremadoc | Migneintian | 477.7 | ||||
| Cressagian | 480.8 * | ||||||
| 485 * | |||||||