| Name | From | To | Age range |
|---|---|---|---|
| Azolla conspicua | Cretaceous | Thanetian |
|
| Azolla cretacea | Cretaceous | Tertiary |
|
| Azolla deccaniana | Cretaceous | Cretaceous |
|
| Azolla distincta | Cretaceous | Recent |
|
| Azolla dorofeevii | Late Miocene | Late Neogene |
|
| Azolla echinata | Campanian | Early Maastrichtian |
|
| Azolla elegans | Danian | Thanetian |
|
| Azolla extincta | Cretaceous | Cretaceous |
|
| Azolla filiculoides | Paleocene | Recent |
|
| Azolla filiformis | Late Cretaceous | Thanetian |
|
| Azolla filosa | Cretaceous | Thanetian |
|
| Azolla fistulosa | Cretaceous | Paleocene |
|
| Azolla fragilis | Paleocene | Paleocene |
|
| Azolla geneseana | Cretaceous | Cretaceous |
|
| Azolla gigantea | Late Cretaceous | Late Cretaceous |
|
| Azolla glabra | Chattian | Early Piacenzian |
|
| Azolla glochidia | Eocene | Late Eocene |
|