- Author:
- Ferm,J.C.
- Year:
- 1950
- Title:
- Megaspores of the Middle (?) Kittanning Coal in Beaver County, Pennsylvania.
- Reference:
- Ferm,J.C. (1950) Megaspores of the Middle (?) Kittanning Coal in Beaver County, Pennsylvania. American Journal of Botany Vol. 37 P. 672- 673
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Cystosporites | Cystosporites | Pennsylvania | Pennsylvanian | |
| Monoletes | Monoletes | Pennsylvania | Pennsylvanian | |
| Parasporites | Parasporites | Pennsylvania | Pennsylvanian | |
| Triletes | Triletes | Pennsylvania | Pennsylvanian |