- Author:
- Guennel,G.K.;Neavel,R.C.
- Year:
- 1958
- Title:
- Paper Coal in Indiana
- Reference:
- Guennel,G.K. et al. (1958) Paper Coal in Indiana Science Vol. 129 P. 1671- 1672
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Bicoloria | Bicoloria | Indiana | Late Pottsville | |
| Sphenopteris | Sphenopteris bradfordii | Indiana | Late Pottsville | |
| Sphenopteris | Sphenopteris marrati | Indiana | Late Pottsville | |
| Torispora | Torispora | Indiana | Late Pottsville |