| details |
Early Eifelian |
|
Canada(Arctic) |
Arkhangelskaya,A.D. et al. Correlation of the Lower Middle Devonian Elenisporis biformis spore Subzone in Arctic Canada and the USSR. |
1990 |
| details |
Late Emsian |
Eifelian |
USSR(European) |
Arkhangelskaya,A.D. et al. Correlation of the Lower Middle Devonian Elenisporis biformis spore Subzone in Arctic Canada and the USSR. |
1990 |
| details |
Middle Eifelian |
|
Canada(New Brunswick) |
Bradley,D.C. et al. Migration of the Acadian Orogen and Foreland Basin Across the Northern Appalachians of Maine and adjacent areas. |
2000 |