| details |
Givetian |
Frasnian |
England |
Mortimer,M.G. et al. The palynology of the Concealed Devonian rocks of Southern England. |
1972 |
| details |
Eifelian |
Givetian |
|
Daemon,R.F. et al. Devonian palynology and biostratigraphy of the Parana Basin. |
1967 |
| details |
Middle Devonian |
|
|
Lange,F.W. et al. The Devonian of the Parana Basin |
1967 |
| details |
Givetian |
|
Scotland(Orkney) |
Richardson,J.B. Middle Old Red Sandstone spore assemblages from the Orcadian Basin, northeast Scotland. |
1965 |
| details |
Visean |
|
Scotland |
Love,L.G. Assemblages of small spores from the Lower Oil-Shale Group of Scotland. |
1960 |
| original |
Early Mississippian |
|
Canada(Nova Scotia) |
Hacquebard,P.A. Plant spores in Coal from the Horton Group (Mississippian), of Nova Scotia. |
1957 |