| original |
Pridolian |
Early Gedinnian |
USSR(Ukrainian SSR) |
Kiryanov,V.V. Silurian acritarchs of Volhynia and Podolia |
1978 |
| details |
Downtonian |
Gedinnian |
USSR(Estonian SSR) |
Richardson,J.B. et al. Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries. |
1981 |
| details |
Downtonian |
Gedinnian |
USSR(Russian Platform) |
Richardson,J.B. et al. Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries. |
1981 |
| details |
Gedinnian |
|
Libya |
Richardson,J.B. et al. Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries. |
1981 |
| details |
Pridolian |
Early Gedinnian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Gothlandian |
Early Devonian |
USSR(Ukrainian SSR) |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Middle Pridolian |
|
Libya |
Le H©riss©,A. Paleoecology, biostratigraphy and biogeography of late Silurian to early Devonian acritarchs and prasinophycean phycomata in well A161, Western Libya, North Africa |
2002 |