1. A catalogue of the Cretaceous and Tertiary plants of North America Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1898 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 150-152. Access & Availability: Loading
2. A catalogue of the Cretaceous and Tertiary plants of North America Author/Creator: Knowlton, Frank Hall, 1860-1926, author Publication/Creation: Washington, D.C. : Department of the Interior, United States Geological Survey, 1898 Resource Type: Book Access & Availability: Loading
3. Complexiopollis pollen lineage in Mississippi embayment rocks Author/Creator: Tschudy, Robert H. Publication/Creation: Washington : U.S. Govt. Print. Off, 1973 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 737-743. Access & Availability: Loading
4. Complexiopollis pollen lineage in Mississippi embayment rocks Author/Creator: Tschudy, Robert H., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1973 Resource Type: Book Access & Availability: Loading