| Name | From | To | Age range |
|---|---|---|---|
| Alnus pre-cordata | Late Paleocene | Early Pliocene |
|
| Alnus incerta | Paleogene | Neogene |
|
| Alnus jorulensis | Paleogene | Neogene |
|
| Alnus incana | Early Tertiary | Pleistocene |
|
| Alnus spectabilis | Paleogene | Neogene |
|
| Alnus subcordata | Paleogene | Neogene |
|
| Alnus arcuata | Paleogene | Neogene |
|
| Alnus glutinosa | Early Tertiary | Holocene |
|
| Alnus opulenta | Paleogene | Neogene |
|
| Alnus menzelii | Paleogene | Neogene |
|
| Alnus rugosa | Tertiary | Early Pleistocene |
|
| Alnus recollecta | Paleogene | Neogene |
|
| Alnus rhombifolia | Paleogene | Neogene |
|
| Alnus sieboldiana | Early Tertiary | Early Tertiary |
|
| Alnus compacta | Paleogene | Neogene |
|
| Alnus speciipites | Paleocene | Late Neogene |
|
| Alnus serrulata | Early Tertiary | Neogene |
|