| original |
Pennsylvanian |
|
Illinois |
Arnold,C.A. Petrified Cones of the genus Calamostachys from the Carboniferous of Illinois. |
1958 |
| details |
Nd |
|
Nd |
Pi©rart,P. The evolution of the megaspores. |
1961 |
| details |
Nd |
|
Nd |
Potonie,R. Fossil sporae in situ. Comparison with the sporae dispersae. Addition to the synopsis of the sporae in situ. |
1965 |
| details |
Middle Pennsylvanian |
Late 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 |
Late Pennsylvanian |
USA |
Taylor,T.N. et al. Preliminary study of spores from Carboniferous fructifications utilizing the Scanning Electron Microscope. |
1969 |
| details |
Pennsylvanian |
|
Nd |
Good,C.W. et al. Elater-bearing spores of the Calamitales. |
1974 |
| details |
Nd |
|
Nd |
Good,C.W. et al. The morphology and systematic position of Calamitean elater-bearing spores. |
1975 |
| details |
Pennsylvanian |
|
Illinois |
Courvoisier,J.M. et al. Correlation of spores from Pennsylvanian Coal-Ball fructifications with dispersed spores. |
1975 |
| details |
Pennsylvanian |
|
USA |
Good,C.W. Pennsylvanian-Age Calamitean cones, elater-bearing spores, and associated vegetative organs. |
1975 |
| details |
Carboniferous |
|
Nd |
Chaloner,W.G. The evolution of adaptive features in fossil exines. |
1976 |
| details |
Carboniferous |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |