| details |
Devonian |
|
Missouri |
Urban,J.B. A study of the morphology of the spore genus Ancyrospora Richardson |
1969 |
| details |
Eifelian |
Givetian |
Scotland |
Richardson,J.B. Spores with bifurcate processes from the Middle Old Red Sandstone of Scotland. |
1962 |
| details |
Eifelian |
Early Givetian |
Scotland(Orkney) |
Richardson,J.B. Middle Old Red Sandstone spore assemblages from the Orcadian Basin, northeast Scotland. |
1965 |
| details |
Emsian |
|
Germany(Rhineland) |
Lanninger,E.P. Spore assemblages from the Ems of the SW Eifel, (Rheinisches Schiefergebirge) |
1968 |
| 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 |
Couvinian |
Givetian |
Belgium |
Streel,M. Palaeobotanic information on the Lower-Middle Devonian boundary in the Ardenno-Rhenean Geosyncline. |
1965 |
| details |
Early Devonian |
|
China(Kweichow) |
Kao,L. et al. Early and Middle Devonian spore assemblages from Tushan and Duyun of Kweichow and their stratigraphical significane. |
1975 |