Ahrensisporites exertus
- Citations total:
- 2
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| original | Conemaugh | Monongahela | Kentucky | Peppers,R.A. Spores in strata of Late Pennsylvanian cyclothems in the Illinois Basin. | 1964 |
| details | Middle Pennsylvanian | Iowa | Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa | 1986 |