| details |
Pridolian |
|
Estonia |
Rubel,M. Biostratigraphy: Composite standard |
1990 |
| details |
Early Pridolian |
|
Estonia |
Nestor,N. Locality 9:1 Silurian sequences at Sarghaua Field Station |
1990 |
| details |
Middle Lochkovian |
Late Lochkovian |
Bulgaria |
Lakova,I. Biostratigraphy of Lochkovian chitinozoans from North Bulgaria. (In: Contributions to Acritarch and Chitinozoan Research. S.G.Molyneux and K.J.Doring, editors) |
1993 |
| details |
Early Devonian |
|
USSR(Mountain Altai) |
Kozlov,M.S. et al. Stratigraphy of the Upper Silurian Devonian and Lower Carboniferous deposits of Southwestern Altai |
1994 |