| details |
Middle Pennsylvanian |
|
Illinois |
Kurmann,M.H. et al. Comparative ultrastructure of Sphenophyte spores Elaterites and Equisetum |
1984 |
| details |
Atokan |
|
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |
| details |
Westphalian D |
|
England(Staffordshire) |
Turner,N. The occurrence of Elaterites triferens Wilson 1943 in miospore assemblages from Coal Measures of Westphalian D age, North Staffordshire, England. |
1991 |
| 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 |
| details |
Carboniferous |
|
California |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |