| Name | From | To | Age range |
|---|---|---|---|
| Azolla type 3 | Late Maastrichtian | Late Maastrichtian |
|
| Azolla anglica | Paleocene | Early Eocene |
|
| Azolla elegans | Danian | Thanetian |
|
| Azolla pinnata | Paleocene | Recent |
|
| Azolla ventricosa | Tertiary | Piacenzian |
|
| Azolla imbricata | Paleocene | Paleocene |
|
| Azolla caroliniana | Paleocene | Paleocene |
|
| Azolla filiculoides | Paleocene | Recent |
|
| Azolla nilotica | Paleocene | Paleocene |
|
| Azolla nikitinii | Tertiary | Early Piacenzian |
|
| Azolla fragilis | Paleocene | Paleocene |
|
| Azolla parapinnata | Tertiary | Messinian |
|
| Azolla vera | Tertiary | Early Oligocene |
|
| Azolla schopfii | Paleocene | Paleocene |
|
| Azolla stanleyi | Paleocene | Middle Eocene |
|
| Azolla aspera | Tertiary | Piacenzian |
|
| Azolla areolata | Danian | Priabonian |
|