| Name | From | To | Age range |
|---|---|---|---|
| Nothofagus butlerensis | Eocene | Oligocene |
|
| Nothofagus brassii | Cretaceous | Quaternary |
|
| Nothofagus brachyspinulosa | Teurian | Late Neogene |
|
| Nothofagus betuloides | Paleocene | Early Oligocene |
|
| Nothofagus beardmorensis | Middle Eocene | Middle Eocene |
|
| Nothofagus australis | Paleocene | Eocene |
|
| Nothofagus astra | Mesozoic | Cenozoic |
|
| Nothofagus asperus | Late Cretaceous | Late Neogene |
|
| Nothofagus antarctica | Tertiary | Late Pliocene |
|
| Nothofagus alessandri | Late Eocene | Early Oligocene |
|
| Nothofagus africana | Senonian | Paleocene |
|
| Nothofagus | Early Cretaceous | Recent |
|