Azolla sp.1
- Citations total:
- 2
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| original | Maastrichtian | North Dakota | Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. | 1974 | |
| original | Late Eocene | USSR(Yamalo-Nenets) | Lyubomirova,K.A. The palynological characteristics of the Chegansk horizon of North West Siberia. (In: Palynological Studies. Collected Articles. S.R.Samoilovich, editor) | 1976 |