| details |
Nd |
|
Nd |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |
| details |
Namurian A |
Namurian B |
USSR(Ukrainian SSR) |
Teteryuk,V.K. Stratigraphic separation of Lower Carboniferous deposits of the western part of the Donbas by spores and pollen |
1960 |
| details |
Middle Jurassic |
|
USSR |
Pokrovskaya,I.M. Pollen analysis |
1958 |
| details |
Jurassic |
Early Cretaceous |
USSR |
Naumova,S.N. Spores and pollen of coals of the USSR. |
1939 |
| details |
Jurassic |
Early Cretaceous |
USSR |
Pokrovskaya,I.M. Pollen analysis |
1958 |