1. Microfossils from the Upper Cretaceous of Vendee (France);Azema;Review of Palaeobotany and Palynology,1981
2. The Upper Cretaceous and Eocene floras of South Carolina and Georgia;Berry;US Geological Survey Professional Paper,1914
3. Spores et pollen du crétacé supérieur du Gabon;Boltenhagen;Pollen et Spores,1967
4. The spores and pollen of the Potomac Group of Maryland;Brenner;Maryland Department of Geology, Mines and Water Resources, Bulletin,1963
5. Middle Cretaceous spores and pollen from northeastern Peru;Brenner;Pollen et Spores,1968