Devonian
| Belongs to | Paleozoic |
| Type | chronostratigraphy |
| Rank | System |
| Scope | global |
| Status | formal standard |
| Author | Adam Sedgwick, Roderick I Murchison |
| Year | 1839 |
| Etymon | Devon County, England |
| Age top (Ma) | 358.9 |
| Age base (Ma) | 419.2 |
| Age (Ma) | Paleozoic |
| Index | D |
| Alt. index | D |
| Date changed | 2022-11-04 |
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