Genus Betula
- Species total:
- 131
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Betula microexcelsa | Cretaceous | Early Miocene |
|
| Betula ulmifolia | Early Oligocene | Middle Oligocene |
|
| Betula sp.1 Sung et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula sp.3 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula sp.2 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula eramaniformis | Paleocene | Middle Oligocene |
|
| Betula mollis | Late Cretaceous | Early Oligocene |
|
| Betula fucosa | Early Cretaceous | Paleocene |
|
| Betula magnoporus | Maastrichtian | Paleocene |
|
| Betula plicoides | Maestrichtian | Paleocene |
|
| Betula definita | Maastrichtian | Paleocene |
|
| Betula ajatica | Early Cretaceous | Turonian |
|