In the geological timescale, the Early Devonian epoch (from 416.0 ± 2.8 million years ago to 397.5 ± 2.7 million years ago) occurred during the Devonian period, after the end of the Silurian period.
The Early Devonian epoch is subdivided into three stages: Lochkovian, Pragian and Emsian.
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| Lower/Early Devonian | Middle Devonian | Upper/Late Devonian |
|---|---|---|
| Lochkovian | Pragian Emsian |
Eifelian | Givetian | Frasnian | Famennian |