| original |
Late Pennsylvanian |
|
Illinois |
Winslow,M.R. Upper Mississippian and Pennsylvanian megaspores and other plant microfossils from Illinois. |
1959 |
| original |
Middle Pennsylvanian |
|
Illinois |
Winslow,M.R. Upper Mississippian and Pennsylvanian megaspores and other plant microfossils from Illinois. |
1959 |
| details |
Nd |
|
Nd |
Osborn,J.M. et al. Comparative ultrastructure of fossil gymnosperm pollen and its phylogenetic implications. (In: Ultrastructure of Fossil Spores and Pollen. M.H.Kurmann and J.A.Doyle, editors) |
1994 |
| details |
Late Pennsylvanian |
|
Illinois |
Dennis,R.L. et al. Parasporotheca, gen.nov., and its bearing on the interpretation of the morphology of permineralized Medullosan pollen organs. |
1978 |
| details |
Carboniferous |
|
Nd |
Volkheimer,W. Palynomorphs as guide fossils. Part 2. |
1973 |
| details |
Westphalian |
Stephanian |
France |
Alpern,B. Succinct descriptions of the principal genera and species of pollen and spores found in the Coals of Central and eastern France. |
1956 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
USA |
Taylor,T.N. Ultrastructural studies of Paleozoic seed fern pollen |
1982 |
| details |
Nd |
|
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 |
Middle Pennsylvanian |
Late Pennsylvanian |
USA |
Taylor,T.N. Ultrastructural studies of Paleozoic seed fern pollen |
1982 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
USA |
Taylor,T.N. Ultrastructural studies of Paleozoic seed fern pollen |
1982 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
USA |
Taylor,T.N. Ultrastructural studies of Paleozoic seed fern pollen |
1982 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
USA |
Taylor,T.N. Ultrastructural studies of Paleozoic seed fern pollen |
1982 |
| details |
Carboniferous |
|
France(Jura) |
Navale,G.K.B. Coal- A palyno-petrographic approach. |
1963 |