| Name | From | To | Age range |
|---|---|---|---|
| Azolla agittifera | Late Cretaceous | Late Cretaceous |
|
| Azolla polyancyra | Late Cretaceous | Late Cretaceous |
|
| Azolla massula | Late Cretaceous | Early Tertiary |
|
| Azolla filiformis | Late Cretaceous | Thanetian |
|
| Azolla sp.A | Campanian | Early Oligocene |
|
| Azolla echinata | Campanian | Early Maastrichtian |
|
| Azolla stanleyii | Maastrichtian | Maastrichtian |
|
| Azolla sp.1 | Maastrichtian | Maastrichtian |
|
| Azolla pilata | Maastrichtian | Maastrichtian |
|
| Azolla tomentosa | Maastrichtian | Zanclian |
|
| Azolla sp.2 | Maastrichtian | Maastrichtian |
|
| Azolla mexicana | Maastrichtian | Maastrichtian |
|
| Azolla sp. Ruiz & Quat.,1997 | Maastrichtian | Paleocene |
|
| Azolla primaeva | Maastrichtian | Messinian |
|
| Azolla sp. Li,1997 | Late Maestrichtian | Late Maestrichtian |
|
| Azolla type 3 | Late Maastrichtian | Late Maastrichtian |
|
| Azolla type 1 | Late Maastrichtian | Late Maastrichtian |
|