| Name | From | To | Age range |
|---|---|---|---|
| Azolla filiculoides | Paleocene | Recent |
|
| Azolla sp.1 | Maastrichtian | Maastrichtian |
|
| Azolla schopfii | Paleocene | Paleocene |
|
| Azolla extincta | Cretaceous | Cretaceous |
|
| Azolla pilata | Maastrichtian | Maastrichtian |
|
| Azolla gigantea | Late Cretaceous | Late Cretaceous |
|
| Azolla pondicherriana | Late Albian | Late Albian |
|
| Azolla sp.2 | Maastrichtian | Maastrichtian |
|
| Azolla microphylla | Early Miocene | Early Miocene |
|
| Azolla siberica | Oligocene | Oligocene |
|
| Azolla agittifera | Late Cretaceous | Late Cretaceous |
|
| Azolla polyancyra | Late Cretaceous | Late Cretaceous |
|
| Azolla mexicana | Maastrichtian | Maastrichtian |
|
| Azolla grandipolina | Oligocene | Oligocene |
|
| Azolla sulaensis | Miocene | Miocene |
|
| Azolla geneseana | Cretaceous | Cretaceous |
|
| Azolla deccaniana | Cretaceous | Cretaceous |
|