Azolla berryi
- Citations total:
- 2
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| details | Middle Eocene | Colorado | M¤dler,K.A. Azolla of the Quaternary and Tertiary and its significance for the taxonomy of older spores | 1954 | |
| details | Eocene | Canada(British Columbia) | Hills,L.V. et al. Azolla primaeva and its phylogenetic significance. | 1967 |