| details |
Llandoverian |
|
Pennsylvania |
Gensel,P.G. et al. Early land plant debris (Hooker's "Waifs and Stray"?) |
1990 |
| details |
Llandoverian |
|
Paraguay |
Steemans,P. et al. Llandovery miospore biostratigraphy and stratigraphic evolution of the ParanŠ Basin, Paraguay - Palaeogeographic implications. |
2002 |
| details |
Ashgillian |
|
Ohio |
Taylor,W.A. Ultrastructure of Tetrahedraletes medinensis (Strother and Traverse) Wellmand and Richardson, from the Upper Ordovician of Southern Ohio |
1995 |
| 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 |
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 |
Early Llandoverian |
|
New York |
Miller,M.A. et al. Palynomorphs from the Silurian Medina Group (Lower Llandovery), of the Naigara Gorge, Lewiston, New York, USA. |
1980 |
| details |
Llandoverian |
|
New York |
Miller,M.A. et al. Palynomorphs from the Silurian Medina Group, (Lower Llandovery), of the Niagara Gorge, Lewiston, New York, USA. |
1982 |
| 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 |
Caradocian |
Early Pridolian |
Nd |
Richardson,J.B. Paleozoic spores and pollen: Lower and Middle Palaeozoic record of terrestrial palynomorphs. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Nd |
|
Nd |
Pant,D.D. et al. Possible fossil sporae dispersae of Hepaticae and Anthocerotale in the fossil record |
1991 |
| details |
Early Silurian |
Early Devonian |
Nd |
Pant,D.D. et al. Possible fossil sporae dispersae of Hepaticae and Anthocerotale in the fossil record |
1991 |
| details |
Early Ordovician |
|
Nd |
Pant,D.D. et al. Possible fossil sporae dispersae of Hepaticae and Anthocerotale in the fossil record |
1991 |
| details |
Late Ordovician |
Early Silurian |
Nd |
Taylor,W.A. Evolutionary hypothesis of Cryptospore producing plants based on wall ultrastructure. |
2001 |
| details |
Llandoverian |
|
Nd |
Steemans,P. Spores and crytospores diversification from the Ordovician to the Lower Devonian. |
1998 |
| details |
Late Ordovician |
|
Missouri |
Miller,M.A. Paniculaferum missouriensis, gen.et sp.nov., a new Upper Ordovician acritarch from Missouri, USA. |
1991 |
| details |
Early Gothlandian |
Rhuddanian |
Libya |
Hill,P.J. et al. Silurian palynomorphs. (In: Palynology of Northeast Libya. B.Thusu and B.Owens, editors) |
1985 |