| original |
Maastrichtian |
Danian |
USSR(WSL) |
Chlonova,A.F. Spores and pollen of the upper half of the Upper Cretaceous of the eastern part of the Western Siberian Lowland. |
1961 |
| details |
Late Cretaceous |
Early Tertiary |
North America |
Kedves,M. et al. Problems of Cretaceous-Palaeogene palaeophytogeographical Regions based on palynological results 2. |
1970 |
| details |
Maastrichtian |
Danian |
USSR(Kazakh SSR) |
Rzhanikova,L.N. Fossil Pseudomorphs replacing spores and pollen, and their practical value. (In: Technical Problems in Palynology. A.M.Medvedeva, editor) |
1973 |
| details |
Coniacian |
Santonian |
USSR(WSL) |
Grigoreva,K.N. Assay of the paleofloristic division into districts of eastern and south-eastern parts of West-Siberi in Senonian Peiod |
1973 |
| details |
Maastrichtian |
Danian |
USSR(WSL) |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |