| original |
Early Pennsylvanian |
Middle Pennsylvanian |
Kentucky |
Millay,M.A. et al. Morphological studies of Paleozoic saccate pollen. |
1974 |
| details |
Nd |
|
Nd |
Beck,C.B. Current status of the Progymnospermopsidia. |
1976 |
| details |
Nd |
|
Nd |
Daghlian,C.P. et al. A new method for Isolating pollen and spores from aletate peels for scanning electron microscopy. |
1979 |
| details |
Pennsylvanian |
Permian |
Kentucky |
Stockey,R.A. Some comments on the origin and evolution of Conifers. |
1981 |
| details |
Early Pennsylvanian |
Middle Pennsylvanian |
Nd |
Vasanthy,G. et al. The evolution of angiospermid pollen characteristics: Conjectures and Queries. (In: Proceeding of the Symposium on the Vistas in Indian Palaeobotany. K.P.Jain and R.S.Tiwari, editors) |
1990 |
| details |
Nd |
|
Nd |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Late Paleozoic |
|
Nd |
Poort,R.J. et al. Zoidogamy in fossil Gymnosperms: the Centenary of a concept, with special References to Predolian of Late Paleozoic Conifers |
1996 |
| details |
Nd |
|
Nd |
Jarzen,D.M. et al. Pollen. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| 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 |