- Author:
- Mamay,S.H.
- Year:
- 1954
- Title:
- Two new plant genera of Pennsylvanian age from Kansas coal balls.
- Reference:
- Mamay,S.H. (1954) Two new plant genera of Pennsylvanian age from Kansas coal balls. United States Geological Survey, Professional Paper # 254 P. 81- 95
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Sclerocephalus | Sclerocephalus oviformis sp. nov. | Kansas | Desmoinesian | |
| Spore | Spore sp | Kansas | Desmoinesian | |
| Tyliosperma | Tyliosperma orbiculatum sp. nov. | Kansas | Desmoinesian |