Psilopsida
- Citations total:
- 2
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| details | Early Cambrian | India | Jacob,K. et al. Spores and tracheides of vascular plants from the Vindyan system, India. | 1953 | |
| details | Middle Triassic | USSR(Taymyr Nat.Okrug) | Kara-Murza,E.N. Palynological basis of stratigraphical subdivision of the Mesozoic deposits of the Khatanga Depression. | 1960 |