| details |
Late Neogene |
|
USSR(Vologda) |
Dorofeev,P.I. The Pliocene flora of the Clay at Nagavskaya on the Don |
1957 |
| details |
Late Neogene |
Pleistocene |
USSR(Tatar ASSR) |
Baranov,V.I. et al. Fossil flora of Lower Quaternary and Upper Tertiary deposits of the Lower Kama (River) Region |
1961 |
| details |
Piacenzian |
|
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Late Neogene |
|
USSR(Siberia) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |