Thysanites densus
- Citations total:
- 2
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| original | Pennsylvanian | Iowa | Ravn,R.L. An introduction to the stratigraphic palynology of the Cherokee Group (Pennsylvanian) coals of Iowa. | 1979 | |
| details | Atokan | Iowa | Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa | 1986 |