| details |
Pennsylvanian |
|
Iowa |
Good,C.W. et al. The establishment of Elaterites triferens spores in Calamocarpon insignis microsporangia |
1974 |
| details |
Pennsylvanian |
|
Illinois |
Good,C.W. et al. The establishment of Elaterites triferens spores in Calamocarpon insignis microsporangia |
1974 |
| details |
Pennsylvanian |
|
USA |
Good,C.W. Pennsylvanian-Age Calamitean cones, elater-bearing spores, and associated vegetative organs. |
1975 |
| details |
Early Desmoinesian |
|
Iowa |
Baxter,R.W. et al. A Pennsylvanian Calamitean cone with Elaterites triferens spores. |
1967 |
| details |
Middle Pennsylvanian |
|
Iowa |
Baxter,R.W. et al. A new Equisetalean cone with Elaterites triferens spores. |
1966 |
| details |
Carboniferous |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |