Azolla fragilis
- Citations total:
- 4
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Author - title
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| original | Paleocene | Montana | Jain,R.K. et al. A contribution to the Early Tertiary fossil record of the Salviniaceae | 1969 | |
| details | Paleocene | Nd | Fowler,K. Megaspores and Massulae of Azolla prisca from the Oligocene of the Isle of Wight. | 1975 | |
| details | Nd | Nd | Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores | 1990 | |
| details | Paleocene | USA | Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. | 1995 |