| details |
Middle Cambrian |
Early Ordovician |
USSR(Carpathians) |
Sergeeva,L.A. et al. The importance of microphytofossils for the Paleozoic stratigraphy of the Carpathian-Balkan Region. (In: Geology of the Soviet Carpathians) (N.P.Semenenko-Eds) |
1984 |
| details |
Nd |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Middle Cambrian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Cambrian |
|
Bulgaria |
Sergeeva,L.A. et al. On the Paleozoic age of the metamorphic rocks in Stradza |
1979 |
| details |
Middle Cambrian |
Late Cambrian |
Bulgaria |
Sergeeva,L.A. et al. Micropaleophytological investigations of metamorphic formations of the Carpathian Balkan folded region. (In: Stratigraphy and Correlation of Sediments Using Palynology Methods. Materials IV All-Union Palynological Conference. G.N.Papulov, editor) |
1983 |
| details |
Middle Cambrian |
Late Cambrian |
Bulgaria |
Sergeeva,L.A. et al. Devonian palynomorphs in the Strandzha metamorphites |
1983 |
| details |
Ordovician |
|
Bulgaria |
Maljakov,J.G. et al. Palynological data for a possible age of a Part of the Low-Grade metamorphic rocks in Strandza Mountain |
1982 |