| original |
Middle Cambrian |
|
USSR(Baltic) |
Yankauskas,T.V. et al. New Cambrian acritarchs from the East Baltic Region. |
1976 |
| details |
Early Cambrian |
|
USSR(Ukrainian SSR) |
Bessonova,V.Y. et al. Eastern Part of the Podlyask-Brest Depression. (In: Stratigraphy of Upper Precambrian and Cambrian deposits on the western part of the East European Platform. B.M.Keller and A.Y.Rozanov, editors) |
1979 |
| details |
Early Cambrian |
|
USSR(Belorussian SSR) |
Bessonova,V.Y. et al. Eastern Part of the Podlyask-Brest Depression. (In: Stratigraphy of Upper Precambrian and Cambrian deposits on the western part of the East European Platform. B.M.Keller and A.Y.Rozanov, editors) |
1979 |
| details |
Middle Cambrian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |