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Geolocation
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Author - title
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Year
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| details | Albian | Coniacian | North America | Takahashi,K. Problems of distribution and variation of pollen and spore assemblages in the Upper Cretaceous and Paleogene. | 1973 |
| details | Albian | Cenomanian | Russia(Siberia) | Chlonova,A.F. et al. Comparative analysis of sporoderm ultrastructure of Clavatipollenites incisus and two species of Ascarina (Chloranthaceae). | 1988 |