| details |
Nd |
|
Nd |
Felix,C.J. Some Neglected aspects of plant microfossil research. |
1960 |
| details |
Desmoinesian |
|
Iowa |
Baxter,R.W. A revision of the Sphenopsid organ genus, Litostrobus |
1967 |
| details |
Carboniferous |
|
Nd |
Bharadwaj,D.C. et al. Suggestions for a morphological classification of sporae dispersae. |
1968 |
| details |
Middle Pennsylvanian |
|
USA |
Taylor,T.E. et al. Studies of spores from Carboniferous fructifications. 1. Introduction and preliminary survey utilizing the Scanning Electron Microscope. |
1969 |
| details |
Middle Pennsylvanian |
|
USA |
Taylor,T.N. et al. Preliminary study of spores from Carboniferous fructifications utilizing the Scanning Electron Microscope. |
1969 |
| details |
Pennsylvanian |
|
USA |
Good,C.W. Pennsylvanian-Age Calamitean cones, elater-bearing spores, and associated vegetative organs. |
1975 |
| details |
Middle Pennsylvanian |
|
Illinois |
Good,C.W. Taxonomic and stratigraphic significance of the dispersed spore genus Calamospora. |
1977 |
| details |
Carboniferous |
|
Iowa |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |