| details |
Early Gothlandian |
|
Canada(Anticosti Island) |
Duffield,S.L. et al. Acritarch biostratigraphy of Upper Ordovician-Lower Silurian rocks, Anticosti Island, Quebec. |
1981 |
| details |
Rhuddanian |
|
Libya |
Hill,P.J. et al. Silurian palynomorphs. (In: Palynology of Northeast Libya. B.Thusu and B.Owens, editors) |
1985 |
| details |
Late Ashgillian |
Early Telychian |
Libya |
Richardson,J.B. Late Ordovician and Early Silurian cryptospores and miospores from northeast Libya. (In: The Subsurface Palynostratigraphy of Northeast Libya. Special Publication of the University of Garryounis, Libya. E.Arnauti et al, editors) |
1989 |
| details |
Late Ashgillian |
Early Telychian |
Libya |
Richardson,J.B. Late Ordovician and Early Silurian cryptospores and miospores from northeast Libya. (In: The Subsurface Palynostratigraphy of Northeast Libya. Special Publication of the University of Garryounis, Libya. E.Arnauti et al, editors) |
1989 |
| details |
Nd |
|
Nd |
Strother,P.K. A classification Schema for the Cryptospores |
1991 |
| details |
Nd |
|
Nd |
Strother,P.K. A classification Schema for the Cryptospores |
1991 |
| details |
Sheinwoodian |
|
Denmark |
Smelror,M. Palynomorphs from the Cyrtograptys centrifugus Graptolite zone (Early Wenlock, Silurian) Bornholm. |
1991 |
| details |
Ordovician |
Llandoverian |
Nd |
Gray,J. Tetrahedraletes, Nodospora, and the "cross" tetrad; An accretion of myth. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |
| 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 |
Ashgillian |
|
Belgium |
Steemans,P. Ordovician cryptospores from the Oostduinkerke Borehole, Brabant Massif, Belgium. |
2001 |
| details |
Llanvirnian |
Ashgillian |
Libya |
Abuhmida,F. et al. Palynostratigraphy and paleoenvironmental study of Middle and Upper Ordovician sequences in NW Sirt Basin, Libya. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |