| original |
Early Givetian |
|
Belgium |
Streel,M. An association of spores from the Lower Givetian of the Vesdre at Goe, Belgium. |
1964 |
| details |
Couvinian |
Givetian |
Belgium |
Streel,M. Palaeobotanic information on the Lower-Middle Devonian boundary in the Ardenno-Rhenean Geosyncline. |
1965 |
| details |
Late Emsian |
Early Couvinian |
Belgium |
Streel,M. Lower Devonian spores from Belgium and their stratigraphic significance |
1967 |
| details |
Middle Devonian |
|
Belgium |
Streel,M. Paleobotanic information on the boundary of the Lower Devonian and Middle Devonian in the Ardenno-Rhenan Geosyncline. |
1967 |
| details |
Givetian |
|
Belgium |
Lele,K.M. et al. Middle Devonian (Givetian) plant microfossils from Goe (Belgium). |
1969 |
| details |
Early Givetian |
|
Belgium |
Lele,K.M. et al. Middle Devonian (Givetian) plant microfossils from Goe (Belgium). |
1969 |
| details |
Nd |
|
Nd |
Smith,A.H.V. Genus Verrucosisporites, Ibrahim,1933, emend. |
1971 |
| details |
Emsian |
Eifelian |
W.Germany(Rhineland) |
Riegel,W. Spores from the Heisdorf, Lauch and Nohn beds (Emsian and Eifelian) of the Eifel Region, Rhineland |
1973 |