| details |
Llandoverian |
|
|
Gray,J. et al. Silurian age fossils from the Paleozoic Parana Basin, Southern Brazil |
1985 |
| details |
Llandoverian |
|
Pennsylvania |
Johnson,N.G. Early Silurian palynomorphs from the Tuscarora Formation in Central Pennsylvania and their paleobotanical and geological significance |
1985 |
| details |
Early Gothlandian |
|
Pennsylvania |
Johnson,N.G. et al. Plant microfossils from the Lower Silurian Tuscarora Formation of Mill Hall Pennsylvania |
1983 |
| details |
Llandoverian |
|
New York |
Miller,M.A. et al. Palynomorphs from the Silurian Medina Group, (Lower Llandovery), of the Niagara Gorge, Lewiston, New York, USA. |
1982 |
| details |
Early Llandoverian |
|
New York |
Miller,M.A. et al. Palynomorphs from the Silurian Medina Group (Lower Llandovery), of the Naigara Gorge, Lewiston, New York, USA. |
1980 |
| original |
Llandoverian |
|
Pennsylvania |
Strother,P.K. et al. Plant microfossils from Llanderovian and Wenlockian rocks of Pennsylvania. |
1979 |