| original |
Ludlovian |
|
USSR(Ukrainian SSR) |
Kiryanov,V.V. Silurian acritarchs of Volhynia and Podolia |
1978 |
| details |
Ludlovian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Ludlovian |
|
Turkey |
Steemans,P. et al. Ordovician and Silurian cryptospores and miospores from southeastern Turkey. |
1996 |
| details |
Ludlovian |
|
Turkey |
Le H©riss©,A. et al. Biogeography of Late Silurian acritarchs and Prasinophytes |
1997 |
| details |
Late Silurian |
|
Tunisia |
Le H©riss©,A. et al. Biogeography of Late Silurian acritarchs and Prasinophytes |
1997 |
| details |
Late Ludlovian |
|
USSR |
Le H©riss©,A. et al. Biogeography of Late Silurian acritarchs and Prasinophytes |
1997 |
| details |
Late Ludlovian |
|
Sweden(Gotland) |
Le H©riss©,A. et al. Biogeography of Late Silurian acritarchs and Prasinophytes |
1997 |