| details |
Ashgillian |
|
Belgium |
Steemans,P. Ordovician cryptospores from the Oostduinkerke Borehole, Brabant Massif, Belgium. |
2001 |
| details |
Rhuddanian |
|
Saudi Arabia |
Steemans,P. et al. Cryptospores and trilete spores from the Llandovery, Nuayyim-2 Borehole, Saudi Arabia. |
2000 |
| original |
Ludfordian |
|
Sweden(Gotland) |
Hagstrom,J. Land-derived palynomorphs from the Silurian of Gotland, Sweden. |
1997 |
| details |
Ludfordian |
|
Sweden(Gotland) |
Hagstrom,J. Land-derived palynomorphs from the Silurian of Gotland, Sweden. |
1997 |