| details |
Late Visean |
Early Namurian |
Canada(Eastern Offshore) |
Barss,M.S. et al. A palynological zonation and correlation of Sixty-Seven wells, |
1979 |
| details |
Late Tournaisian |
Early Visean |
Czechoslovakia |
Bajanik,S. et al. Stratigraphic position of Lower Part of Ochtina Formation between Magnezitovce and Magura |
1985 |
| details |
Famennian |
|
Pennsylvania |
Ahmed,S. Evolutionary morphotrends in a miospore genus Auroraspora |
1988 |
| details |
Famennian |
|
New York |
Ahmed,S. Evolutionary morphotrends in a miospore genus Auroraspora |
1988 |
| details |
Late Devonian |
|
Pennsylvania |
Ahmed,S. Evolutionary morphological variations in miospore genus Auroraspora. |
1990 |
| details |
Late Devonian |
|
New York |
Ahmed,S. Evolutionary morphological variations in miospore genus Auroraspora. |
1990 |