Frasnian age
382.7 - 372.2 Ma
The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:
- K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
There are intervals in 4 timescales which overlap this one. show
This interval is used in the definition of 1901 collections
A total of 2637 collections with 14808 occurrences lie within this time span
| International Chronostratigraphic Timescale | Devonian of Eastern North America | ||||
|---|---|---|---|---|---|
| Devonian | Late Devonian | Famennian | Conewangan/Conneautan/Canadaway | 358.9 | |
| Frasnian | West Fallsian/Sonyean | 372.2 | |||
| Middle Devonian | Givetian | Geneseean/Taghanican/Tioughniogan | Cazenovian | 382.7 | |
| Eifelian | Southwoodian | 387.7 | |||
| Early Devonian | Emsian | Sawkillian/Deer Parkian | Helderbergian | 393.3 | |
| Pragian | 407.6 | ||||
| Lochkovian | 410.8 | ||||
| 419.2 | |||||