Givetian age - Silurian period
| International Chronostratigraphic Timescale | |||
|---|---|---|---|
| Devonian | Late Devonian | Famennian | 358.9 |
| Frasnian | 372.2 | ||
| Middle Devonian | Givetian | 382.7 | |
| Eifelian | 387.7 | ||
| Early Devonian | Emsian | 393.3 | |
| Pragian | 407.6 | ||
| Lochkovian | 410.8 | ||
| Silurian | Pridoli | 419.2 | |
| Ludlow | Ludfordian | 423 | |
| Gorstian | 425.6 | ||
| Wenlock | Homerian | 427.4 | |
| Sheinwoodian | 430.5 | ||
| Llandovery | Telychian | 433.4 | |
| Aeronian | 438.5 | ||
| Rhuddanian | 440.8 | ||
| 443.8 | |||