| details |
Early Llandoverian |
Middle Llandoverian |
Saudi Arabia |
Stump,T.E. et al. The stratigraphy, depositional environments and periods of deformation of the Wajid outcrop Belt, southwestern Saudi Arabia |
1995 |
| details |
Llandoverian |
|
Pennsylvania |
Strother,P.K. A classification Schema for the Cryptospores |
1991 |
| original |
Llandoverian |
|
Pennsylvania |
Strother,P.K. et al. Plant microfossils from Llanderovian and Wenlockian rocks of Pennsylvania. |
1979 |
| details |
Ashgillian |
Early Silurian |
Saudi Arabia |
Steemans,P. Silurian and Lower Emsian spores in Saudi Arabia. (In: Palaeozoic Palynostratigraphy of the Kingdom of Saudi Arabia. B.Owens et al, editors) |
1995 |
| details |
Caradocian |
Early Pridolian |
Turkey |
Steemans,P. et al. Ordovician and Silurian cryptospores and miospores from southeastern Turkey. |
1996 |
| details |
Rhuddanian |
|
Saudi Arabia |
Steemans,P. et al. Cryptospores and trilete spores from the Llandovery, Nuayyim-2 Borehole, Saudi Arabia. |
2000 |
| details |
Llandoverian |
|
Nd |
Steemans,P. Spores and crytospores diversification from the Ordovician to the Lower Devonian. |
1998 |
| details |
Ashgillian |
|
Belgium |
Steemans,P. Ordovician cryptospores from the Oostduinkerke Borehole, Brabant Massif, Belgium. |
2001 |
| details |
Rhuddanian |
|
Saudi Arabia |
Steemans,P. et al. Early Llandovery cryptospores and miospores from Central Saudi Arabia. |
1998 |
| details |
Llandoverian |
|
Paraguay |
Steemans,P. et al. Llandovery miospore biostratigraphy and stratigraphic evolution of the ParanŠ Basin, Paraguay - Palaeogeographic implications. |
2002 |
| details |
Sheinwoodian |
|
Norway |
Smelror,M. Llandovery and Wenlock miospores and spore-like microfossils from the Ringerike District, Norway. |
1987 |
| details |
Sheinwoodian |
|
Denmark |
Smelror,M. Palynomorphs from the Cyrtograptys centrifugus Graptolite zone (Early Wenlock, Silurian) Bornholm. |
1991 |
| details |
Late Aeronian |
Wenlockian |
Argentina(San Juan) |
Rubinstein,C.V. et al. A palynomorph and graptolite biostratigraphy of the Central Precordillera Silurian Basin, Argentina. |
1999 |
| details |
Ludlovian |
Early Lochkovian |
Libya |
Rubinstein,C.V. et al. Miospore assemblages from the Silurian - Devonian boundary, in Borehole A1-61, Ghadamis Basin, Libya. |
2002 |
| details |
Late Lochkovian |
|
|
Rubinstein,C. et al. Lochkovian (Earliest Devonian) miospores from the Solimoes Basin, northwestern Brazil. |
2005 |
| details |
Rhuddanian |
Ludfordian |
Northern Hemisphere |
Richardson,J.B. et al. Silurian and Devonian spore zones of the Old Red Sandstone continent and adjacent regions. |
1986 |
| details |
Nd |
|
Pennsylvania |
Richardson,J.B. et al. Silurian and Devonian spore zones of the Old Red Sandstone continent and adjacent regions. |
1986 |