- Author:
- Hall,J.W.
- Year:
- 1969
- Title:
- Studies on fossil Azolla
- Reference:
- Hall,J.W. (1969) Studies on fossil Azolla American Journal of Botany Vol. 56 # 10 P. 1173- 1180
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Azolla | Azolla circinata | Montana | Late Cretaceous | |
| Azolla | Azolla montana | Montana | Late Cretaceous | |
| Azolla | Azolla simplex sp. nov. | Montana | Campanian | |
| Azollopsis | Azollopsis coccoides | Montana | Late Cretaceous | |
| Azollopsis | Azollopsis tomentosa | Montana | Late Cretaceous | |
| Parazolla | Parazolla | Montana | Campanian | |
| Parazolla | Parazolla heterotricha sp. nov. | Montana | Campanian |