Genus Betula
- Species total:
- 131
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Betula sp.3 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula sp.2 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula costata | Late Eocene | Pleistocene |
|
| Betula ulmifolia | Early Oligocene | Middle Oligocene |
|
| Betula sp. Maly.,1956 | Oligocene | Oligocene |
|
| Betula sp. Agra.et al,1956 | Early Oligocene | Early Oligocene |
|
| Betula incrassata | Oligocene | Early Pliocene |
|
| Betula megagranifer | Early Oligocene | Early Oligocene |
|
| Betula sp. Sigo.& Asat.,1956 | Oligocene | Oligocene |
|
| Betula sp. Roma.,1956 | Oligocene | Oligocene |
|
| Betula suberrecta | Oligocene | Middle Miocene |
|
| Betula simplex | Oligocene | Late Neogene |
|
| Betula trigonia | Oligocene | Early Miocene |
|
| Betula fruticosae | Late Oligocene | Pleistocene |
|
| Betula alnaster | Late Oligocene | Early Miocene |
|
| Betula glandulosa | Late Tertiary | Late Tertiary |
|
| Betula sp. More.,1956 | Miocene | Miocene |
|