| original |
Bashkirian |
|
USSR(Ukrainian SSR) |
Araslanova,R.M. et al. Spores and pollen whose taxonomic position has not been determined. (In: New species of miospores from Paleozoic plants of the European part of the USSR 04-New species of ancient plants and Invertebrata of the USSR) |
1972 |
| details |
Bashkirian |
|
USSR(Ukrainian SSR) |
Teteryuk,V.K. On the Carboniferous Bashkirian-Moscovian boundary of the East-European Platform. (In: Biostratigraphic data for a Mid-Carboniferous boundary. W.H.C.Ramsbottom et al.editors) |
1982 |
| details |
Serpukhovian |
Bashkirian |
Ukraine |
Oshurkova,M.V. et al. Palynostratigraphy of Carboniferous deposits. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |