| original |
Llandoverian |
|
Pennsylvania |
Strother,P.K. et al. Plant microfossils from Llanderovian and Wenlockian rocks of Pennsylvania. |
1979 |
| details |
Llandoverian |
Wenlockian |
USA(Appalachian Bn.) |
Strother,P.K. Non-Marine-Palynomorphs from Llandoverian and Wenlockian strata |
1982 |
| details |
Early Gothlandian |
|
Pennsylvania |
Johnson,N.G. et al. Plant microfossils from the Lower Silurian Tuscarora Formation of Mill Hall Pennsylvania |
1983 |
| details |
Llandoverian |
|
Pennsylvania |
Strother,P.K. et al. Morphology and phylogeny of Silurian spore tetrads. |
1983 |
| details |
Nd |
|
Nd |
Burgess,N.D. Silurian Cryptospores and miospores from the type Llandovery area, southwest Wales. |
1991 |
| details |
Early Gothlandian |
|
Pennsylvania |
Traverse,A. et al. On the Current nomenclatural status of Tetrahedaletes, (Fossiles). |
1994 |
| details |
Early Gothlandian |
|
Pennsylvania |
Traverse,A. et al. On the Current nomenclatural status of Tetrahedaletes, (Fossiles). |
1994 |