The Emsian is one of three faunal stages in the Early Devonian epoch. It lasted from 407 ± 2.8 million years ago to 397.5 ± 2.7 million years ago. It was preceded by the Pragian stage and followed by the Eifelian stage.
In North America the Emsian Stage is represented by Sawkill or Sawkillian time.
|Lower/Early Devonian||Middle Devonian||Upper/Late Devonian|
| Lochkovian | Pragian|
|Eifelian | Givetian||Frasnian | Famennian|