| details |
Pennsylvanian |
|
Nd |
Brush,G.S. et al. Natural relationships of some Carboniferous spores. |
1961 |
| details |
Pennsylvanian |
|
North America |
Arnold,C.A. The fossil-plant record. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Pennsylvanian |
|
Nd |
Good,C.W. et al. Elater-bearing spores of the Calamitales. |
1974 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
Illinois |
Good,C.W. et al. The morphology and systematic position of Calamitean elater-bearing spores. |
1975 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
Kentucky |
Good,C.W. et al. The morphology and systematic position of Calamitean elater-bearing spores. |
1975 |
| details |
Nd |
|
Nd |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |