Verrumonoletes usmensoides
- Citations total:
- 2
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| details | Early Eocene | Early Miocene | Colombia | Hammen,T.Van Der et al. Climatic periodicity and evolution of South American Maestrichtian and Tertiary floras. A study based on pollen anaylsis in Colombia. | 1957 |
| details | Early Eocene | Middle Eocene | Colombia | Gonzalez-Guzman,A.E. A palynological study on the Upper Los Cuervos and Mirador Formations (Lower and Middle Eocene;Tibu area, Colombia) | 1967 |