Early Devonian

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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 epoch.

The Early Devonian epoch is subdivided into three stages: Lochkovian, Pragian and Emsian.


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Devonian period
Lower/Early Devonian Middle Devonian Upper/Late Devonian
Lochkovian | Pragian
Emsian		 Eifelian | Givetian Frasnian | Famennian
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