Genus Betula
- Species total:
- 131
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Betula sp. Zaue.,1956 | Miocene | Miocene |
|
| Betula sp.1 | Early Tertiary | Pleistocene |
|
| Betula sp.1 Kruc.,1956 | Early Miocene | Early Miocene |
|
| Betula sp.1 Roma.,1956 | Miocene | Miocene |
|
| Betula sp.1 Sung et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula sp.2 | Early Tertiary | Pleistocene |
|
| Betula sp.2 Kruc.,1956 | Early Miocene | Early Miocene |
|
| Betula sp.2 Roma.,1956 | Miocene | Miocene |
|
| Betula sp.2 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula sp.3 | Late Senonian | Neogene |
|
| Betula sp.3 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Betula sp.4 | Late Senonian | Neogene |
|
| Betula sp.5 | Paleogene | Neogene |
|
| Betula sp.6 | Paleogene | Neogene |
|
| Betula sp.B | Early Miocene | Early Miocene |
|
| Betula sp.C | Early Miocene | Early Miocene |
|
| Betula sp.D | Early Miocene | Early Miocene |
|