Middle Devonian
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In the geological timescale, the Middle Devonian epoch (from 397.5 ± 2.7 million years ago to 385.3 ± 2.6 million years ago) occurred during the Devonian period, after the end of the Emsian age.
The Middle Devonian epoch is subdivided into two stages: Eifelian and Givetian.
Devonian period | ||
---|---|---|
Lower/Early Devonian | Middle Devonian | Upper/Late Devonian |
Lochkovian | Pragian Emsian |
Eifelian | Givetian | Frasnian | Famennian |