| original |
Llandoverian |
|
Pennsylvania |
Johnson,N.G. Early Silurian palynomorphs from the Tuscarora Formation in Central Pennsylvania and their paleobotanical and geological significance |
1985 |
| details |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Further acritarchs and terrestrial plant remains from the Late Orovician at Hlasna Treban (Czechoslovakia) |
1988 |
| details |
Ashgillian |
Early Llandoverian |
Czechoslovakia |
VavrdovЎ,M. New acritarchs and miospores from the Late Ordovician of Hlasna Treban, Czechoslovakia. |
1989 |
| details |
Llandoverian |
|
Pennsylvania |
Gensel,P.G. et al. Early land plant debris (Hooker's "Waifs and Stray"?) |
1990 |
| details |
Llandoverian |
|
Pennsylvania |
Strother,P.K. A classification Schema for the Cryptospores |
1991 |
| details |
Llanvirnian |
|
Saudi Arabia |
Strother,P.K. et al. New evidence for land plants from the Lower Middle Ordovician of Saudi Arabia |
1996 |
| details |
Ashgillian |
|
China(Zhejiang) |
Yin,L. et al. Palynomorphs from the transitional sequences between Ordovician and Silurian of northwestern Zhejiang, South China. |
2000 |
| details |
Ashgillian |
|
Belgium |
Steemans,P. Ordovician cryptospores from the Oostduinkerke Borehole, Brabant Massif, Belgium. |
2001 |