Punctatisporites productus
- Citations total:
- 3
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| original | Conemaugh | Monongahela | Kentucky | Peppers,R.A. Spores in strata of Late Pennsylvanian cyclothems in the Illinois Basin. | 1964 |
| details | Late Desmoinesian | Texas | Gupta,S. Palynology of the Upper Strawn Series, (Upper Pennsylvanian), of Texas above the Fusulina Zone. | 1969 | |
| details | Conemaugh | Monongahela | Kentucky | Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa | 1986 |