| Name | From | To | Age range |
|---|---|---|---|
| Azolla sulaensis | Miocene | Miocene |
|
| Azolla geneseana | Cretaceous | Cretaceous |
|
| Azolla deccaniana | Cretaceous | Cretaceous |
|
| Azolla africana | Early Miocene | Early Miocene |
|
| Azolla tertiaria | Miocene | Miocene |
|
| Azolla imbricata | Paleocene | Paleocene |
|
| Azolla caroliniana | Paleocene | Paleocene |
|
| Azolla pulchella | Miocene | Miocene |
|
| Azolla type 2 | Late Maastrichtian | Late Maastrichtian |
|
| Azolla type 1 | Late Maastrichtian | Late Maastrichtian |
|
| Azolla guinensis | Early Miocene | Early Miocene |
|
| Azolla nilotica | Paleocene | Paleocene |
|
| Azolla fragilis | Paleocene | Paleocene |
|
| Azolla sp. Li,1997 | Late Maestrichtian | Late Maestrichtian |
|
| Azolla stanleyii | Maastrichtian | Maastrichtian |
|
| Azolla distincta | Cretaceous | Recent |
|
| Azolla barbata | Cretaceous | Recent |
|