| Name | From | To | Age range |
|---|---|---|---|
| Azolla sp.B | Late Miocene | Late Miocene |
|
| Azolla berryi | Eocene | Eocene |
|
| Azolla type 3 | Late Maastrichtian | Late Maastrichtian |
|
| Azolla sp. Papu,1988 | Late Cretaceous | Late Cretaceous |
|
| 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 |
|