Ocalasphaera
- Citations total:
- 2
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| original | Middle Albian | Colombia | Prжssl,K.F. Preliminary results of palynological investigations on the Cretaceous of Columbia, South America | 1992 | |
| details | Late Cretaceous | Germany(Niedersachsen) | Prжssl,K.F. Palaeopalynology Part iii: Acritarch, Prasinophyceen and dinoflagellate: Aquatic palynomorphs from Ursprungs. | 1998 |