| details |
Oligocene |
|
USSR(Primorsk Kray) |
Gromova,I.S. Palynological characteristics of the coal layers of the Kainozoisk Region Rettikhovki (South Primorsk). (In: Spores and pollen of Phanerozoic deposits. L.A. Panova et al, editors) |
1984 |
| details |
Dacian |
|
USSR(Georgian SSR) |
Stuchlik,L. et al. Palynological study of Neogene deposits of Southern Poland and Western Georgia |
1987 |
| details |
Tertiary |
|
Italy |
Nakagawa,T. et al. Pollen morphology of Zelkovia sicula (Ulmaceae), a recently discovered relic species of the Rueopean Tertiary flora: Description, chromosomal relevance and palaeobotanical significance. |
1998 |