| original |
Middle Devonian |
|
Canada(Ontario) |
McGregor,D.C. Spores and other plant microfossils from selected Devonian sedimentary Formations of Canada |
1957 |
| details |
Eifelian |
|
USSR(Kemerovskaya) |
Andreeva,E.M. et al. New data on the phytostratigraphy of Devonian Deposits in the Altay-Sayan Mountain Region. (In: Contributions to the Phytostratigraphy of Devonian Deposits in the Altay-Sayon Mountain Region, Collected Articles) |
1962 |
| original |
Early Emsian |
|
W.Germany(N.Rhine) |
Franke,F. Microfossils of a Lower Devonian bituminous shale layers near Munsterlifel. |
1965 |