| details |
Emsian |
Middle Eifelian |
Canada(Gaspe Area) |
McGregor,D.C. Lower and Middle Devonian spores of eastern Gaspe, Canada.1.Systematics. |
1973 |
| details |
Emsian |
Middle Eifelian |
Canada(Quebec) |
McGregor,D.C. Lower and Middle Devonian spores of eastern Gaspe, Canada.1.Systematics. |
1973 |
| details |
Mississippian |
|
Tennessee |
McGregor,D.C. Lower and Middle Devonian spores of eastern Gaspe, Canada.1.Systematics. |
1973 |
| details |
Mississippian |
|
Tennessee |
Knox,E.M. The spores of Lycopodium, Phylloglossum, Selaginella and Isoetes and their value in the study of microfossils of Paleozoic age. |
1950 |
| details |
Pennsylvanian |
|
Tennessee |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| original |
Mississippian |
|
Tennessee |
Berry,W. Spores from the Pennington Coal, Rhea County, Tennessee. |
1937 |