| details |
Middle Sheinwoodian |
Early Homerian |
England(Northumberland) |
Barron,H.F. Mid-Wenlock acritarchs from a Silurian Inlier in the Cheviot Hills, northeast England. |
1989 |
| details |
Ashgillian |
Early Llandoverian |
Czechoslovakia |
VavrdovЎ,M. New acritarchs and miospores from the Late Ordovician of Hlasna Treban, Czechoslovakia. |
1989 |
| details |
Ashgillian |
Rhuddanian |
Nd |
Richardson,J.B. et al. Sporomorphs and plant megafossils. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| details |
Early Llandoverian |
|
Wales(Carmarthenshire) |
Richardson,J.B. et al. Sporomorphs and plant megafossils. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| details |
Early Llandoverian |
|
Canada(Ontario) |
Eley,B.E. et al. Palynomorphs from the Manitoulin Formation (Early Llandovery) of Southern Ontario |
1988 |
| details |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Further acritarchs and terrestrial plant remains from the Late Orovician at Hlasna Treban (Czechoslovakia) |
1988 |
| details |
Ashgillian |
Middle Llandoverian |
North America |
Gray,J. Land plant spores and Ordovician-Silurian boundary. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Ordovician |
Early Silurian |
Sweden(Gotland) |
Gray,J. Land plant spores and Ordovician-Silurian boundary. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Ashgillian |
Late Llandoverian |
USA(Appalachian Bn.) |
Gray,J. Land plant spores and Ordovician-Silurian boundary. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Sheinwoodian |
|
Norway |
Smelror,M. Llandovery and Wenlock miospores and spore-like microfossils from the Ringerike District, Norway. |
1987 |
| 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 |
| details |
Nd |
|
Sweden |
Richardson,J.B. et al. Silurian and Devonian spore zones of the Old Red Sandstone continent and adjacent regions. |
1986 |
| details |
Late Ashgillian |
Early Llandoverian |
South Africa |
Gray,J. et al. Age of the Cedarberg Formation, South Africa and early land plant evolution. |
1986 |
| details |
Early Gothlandian |
Rhuddanian |
Libya |
Hill,P.J. et al. Silurian palynomorphs. (In: Palynology of Northeast Libya. B.Thusu and B.Owens, editors) |
1985 |
| details |
Fronian |
|
Canada(Anticosti Island) |
Duffield,S.L. Land-derivied microfossils from Jupiter Formation (Upper Llandoverian) Anticosti Island,Quebec. |
1985 |
| original |
Llandoverian |
|
Brazil(Mato Grosso) |
Gray,J. et al. Silurian age fossils from the Paleozoic Parana Basin, Southern Brazil |
1985 |