| original |
Early Pennsylvanian |
|
Kentucky |
Daghlian,C.P. et al. A new structurally preserved Pennsylvanian Cordaitean pollen organ. |
1979 |
| details |
Early Pennsylvanian |
|
Kentucky |
Taylor,T.N. et al. The morphology and ultrastructure of Gothania (Cordaitales) pollen. |
1980 |
| details |
Pennsylvanian |
Permian |
Kentucky |
Stockey,R.A. Some comments on the origin and evolution of Conifers. |
1981 |
| details |
Carboniferous |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Permian |
|
Nd |
Taylor,T.N. et al. In situ, pollen and spores in plant evolution. 14C -Importance of in situ, pollen and spores in understanding the biology and evolution of fossil plants. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |