| details |
Late Oligocene |
Early Miocene |
USSR(Ukrainian SSR) |
Shchekina,N.A. Flora of Brown Coal and Carbonaceous Clays from the Lower Part of the Poltava Suite of the environs of Kiev by spore Nd pollen analysis |
1962 |
| details |
Pliocene |
|
W.Germany(Hesse) |
Frantz,U. Investigation of the spore and pollen flora of the Pliocene of Willershausen |
1961 |
| details |
Tertiary |
|
USSR(Ukrainian SSR) |
Zaklinskaya,E.D. Description of some species of pollen and spores recovered from Tertiary deposits of Pasekovo Quarry, Voronezh District. |
1953 |