| details |
Givetian |
Frasnian |
Bolivia |
Wood,G.D. The acritarch Proteolobus wallii, gen.et sp.nov., from the Devonian Iquiri Formation of Bolivia: A possible coenobial alga. |
1997 |
| details |
Late Ludlovian |
Emsian |
Germany(Saxony) |
Walter,H. et al. Paleozoic microfossils from the northern Margin of the Erzgebir Mountains, (Saxony). |
1998 |
| details |
Ludlovian |
Pridolian |
Poland |
Jachowicz,M. Successions of the acritarcha assemblages in the Silurian sediments in Eastern Pomerania (Northern Poland). |
1998 |
| details |
Wenlockian |
|
England(Shropshire) |
Dorning,K.J. et al. Wenlock cyclicity, palynology, and stratigraphy in the Buildwas, Coalbrookdale, and Much Wenlock Limestone formations, Shropshire, England. |
1999 |
| details |
Middle Rhuddanian |
Late Rhuddanian |
Saudi Arabia |
Le H©riss©,A. Characteristics of the acritarch recovery in the early Silurian of Saudi Arabia. |
2000 |