| details |
Middle Pennsylvanian |
|
Illinois |
Florin,R. On the morphology of the pollen grains in some Palaeozoic Pteridosperms. |
1937 |
| details |
Pennsylvanian |
|
Illinois |
Arnold,C.A. An Introduction to Paleobotany. |
1947 |
| details |
Nd |
|
Nd |
Potonie,R. Position of the Paleozoic spore genera in the natural system. |
1954 |
| details |
Carboniferous |
|
Nd |
Potonie,R. The spores of Palaeozoic plants in the natural (Morphologic) system |
1954 |
| details |
Carboniferous |
|
Illinois |
Potonie,R. Synopsis of the Sporae in situ. |
1962 |
| details |
Pennsylvanian |
|
Nd |
Brush,G.S. et al. The natural relationships of some Carboniferous microspores |
1964 |
| details |
Paleozoic |
|
Nd |
Brush,G.S. et al. The natural relationships of some Carboniferous microspores |
1965 |
| 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 |
Carboniferous |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |