| original |
Late Carboniferous |
Early Permian |
USSR(Ukrainian SSR) |
Inosova,K.I. et al. Atlas of microspores and pollen of Upper Carboniferous and Lower Permian of Donets Basin. |
1976 |
| details |
Asselian |
|
USSR(Astrachan) |
Podgainaya,N.N. Development of Permian flora on the Astrakhan-Kalmykian Prekaspian according to palynological data. (In: Palynology in the USSR. A.F.Chlonova, editor) |
1988 |
| details |
Asselian |
|
USSR(Kalmyr ASSR) |
Podgainaya,N.N. Development of Permian flora on the Astrakhan-Kalmykian Prekaspian according to palynological data. (In: Palynology in the USSR. A.F.Chlonova, editor) |
1988 |
| details |
Gzelian |
|
Ukraine |
Oshurkova,M.V. et al. Palynostratigraphy of Carboniferous deposits. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |