skos:altLabel | - Dev
- Devon
- Eifelian
- Early Devonian
- Emsian
- Late Devonian
- Lower-Middle Devonian
- nian
- Lower Devonian
- early Devonian
- 400 million years ago
- 400 million years ago
- 400-460 million years ago
- Breconian
- D<br>e<br>v<br>o<br>n<br>i<br>a<br>n
- Dev.
- Devo-<br />nian
- Devonian Era
- Devonian Period
- Devonian age
- Devonian geologic period
- Devonian period
- Devonian reef
- Devonian rocks
- Devonian sandstone
- Devonian#Climate
- Devonian#The_greening_of_land
- Devonian#subdivisions
- Dittonian
- Downtonian
- Early Devonian Epoch
- Early Devonian periods
- Early-Mid Devonian
- Farlovian
- Late Devonian Epoch
- Mid Devonian
- Middle Devonian
- Middle Devonian deposits
- Middle Devonian period
- Upper Devonian
- Upper Devonian period
- devonian
- early devonian
- four hundred million years previously
- mid-Devonian
- middle Devonian
- middle Devonian shales
- pre-Devonian
- slate soil
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