Azolla tymensis
- Citations total:
- 3
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| original | Oligocene | USSR(Tomskaya Oblast) | Dorofeyev,P.I. On the taxonomy of the Tertiary Azolla Lam. of the section Rhizosperma Meyen | 1980 | |
| details | Chattian | Messinian | Worldwide | Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. | 1989 |
| details | Late Oligocene | USSR(Siberia) | Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores | 1990 |