Polypodiales
- Citations total:
- 2
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| details | Late Oligocene | Early Miocene | USSR(Ukrainian SSR) | Shchekina,N.A. The development of the flora and vegetation in the Ukraine during the Upper Oligocene and Miocene. | 1980 |
| details | Early Pliocene | Colombia | Wijninga,V.M. Palynology and paleobotany of the Early Pliocene section Rio Frio 17 (Cordillera Oriental, Colombia): Biostratigraphical and chronostratigraphical implications. | 1996 |