| details |
Recent |
|
Nd |
Skuratenko,A.V. Some new spore species of Davalliaceae and Aspidiaceae from the Upper Cretaceous-Paleogene of Western Siberia. |
1968 |
| details |
Late Miocene |
|
Canada(British Columbia) |
White,J.M. et al. New Miocene fossil discoveries in the Skonun Formation, Queen Charlotte Islands British Columbia and implications for the basin stratigraphy and climate. (In: Contributions to Canadian Paleontology.) |
1994 |
| details |
Early Pleistocene |
Middle Pleistocene |
Georgian |
Shatilova,I.I. et al. The genus Pteris L. in the Neogene deposits of Western Georgia |
1996 |
| details |
Nd |
|
Nd |
Generalova,V.N. et al. The nature of fossil sporopollenin. |
1974 |