Betula definita
- Citations total:
- 2
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| details | Maastrichtian | Paleocene | 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 |
| original | Paleocene | Danian | USSR(WSL) | Chlonova,A.F. The composition in species of spores and pollen in the deposits of the Upper Cretaceous of the Chulym-Yenisyei Lowlands. | 1960 |