| Name | From | To | Age range |
|---|---|---|---|
| Azolla filiformis | Late Cretaceous | Thanetian |
|
| Azolla velus | Late Cretaceous | Thanetian |
|
| Azolla teschiana | Late Cretaceous | Priabonian |
|
| Azolla pondicherriana | Late Albian | Late Albian |
|
| Azolla sagittifera | Late Albian | Cenomanian |
|
| Azolla intertrappea | Cretaceous | Lutetian |
|
| Azolla distincta | Cretaceous | Recent |
|
| Azolla bulbosa | Cretaceous | Thanetian |
|
| Azolla extincta | Cretaceous | Cretaceous |
|
| Azolla barbata | Cretaceous | Recent |
|
| Azolla cretacea | Cretaceous | Tertiary |
|
| Azolla circinata | Cretaceous | Paleocene |
|
| Azolla filosa | Cretaceous | Thanetian |
|
| Azolla geneseana | Cretaceous | Cretaceous |
|
| Azolla deccaniana | Cretaceous | Cretaceous |
|
| Azolla simplex | Berriasian | Campanian |
|
| Azolla conspicua | Cretaceous | Thanetian |
|