| Name | From | To | Age range |
|---|---|---|---|
| Azolla | Givetian | Recent |
|
| Azolla poltavica | Toarcian | Messinian |
|
| Azolla tanaitica | Toarcian | Messinian |
|
| Azolla ucrainica | Toarcian | Messinian |
|
| Azolla parvula | Toarcian | Piacenzian |
|
| Azolla irtyshensis | Toarcian | Messinian |
|
| Azolla tambovica | Toarcian | Langhian |
|
| Azolla roemoeensis | Toarcian | Zanclian |
|
| Azolla rossica | Toarcian | Aquitanian |
|
| Azolla sp | Dogger | Pleistocene |
|
| 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 |
|