- Author:
- Bergad,R.D.;Hall,J.W.
- Year:
- 1971
- Title:
- A critical study of three Cretaceous Salviniaceous megaspores.
- Reference:
- Bergad,R.D. et al. (1971) A critical study of three Cretaceous Salviniaceous megaspores. American Journal of Botany Vol. 58 # 5 P. 468- 468
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Azolla | Azolla barbata | Montana | Late Cretaceous | |
| Azolla | Azolla distincta | Montana | Late Cretaceous | |
| Salvinia | Salvinia spinata sp. nov. | Montana | Late Cretaceous |