| Name | From | To | Age range |
|---|---|---|---|
| Alnus form a | Early Sarmatian | Early Sarmatian |
|
| Alnus flexilis | Miocene | Miocene |
|
| Alnus firmiformis | Late Eocene | Middle Miocene |
|
| Alnus firma | Paleogene | Pleistocene |
|
| Alnus finitima | Maastrichtian | Danian |
|
| Alnus feroniae | Late Eocene | Early Oligocene |
|
| Alnus explicata | Paleogene | Neogene |
|
| Alnus eminens | Eocene | Miocene |
|
| Alnus elegans | Late Maastrichtian | Paleocene |
|
| Alnus distincta | Paleogene | Neogene |
|
| Alnus crispa | Late Pliocene | Early Pleistocene |
|
| Alnus cremastogyne | Late Neogene | Pleistocene |
|
| Alnus crebrinervis | Late Pannonian | Late Pannonian |
|
| Alnus cordata | Early Tertiary | Early Tertiary |
|
| Alnus constans | Paleogene | Neogene |
|
| Alnus compacta | Paleogene | Neogene |
|
| Alnus cognita | Paleogene | Neogene |
|