| details |
Middle Eocene |
Late Eocene |
Panama |
Graham,A. Lisianthius pollen from the Eocene of Panama |
1984 |
| details |
Middle Pliocene |
|
Panama |
Graham,A. Studies in neotropical paleobotany:X. The Pliocene communities of Panama: Composition, numerical representations and paleocommunity paleoenvironmental reconstructions |
1991 |
| details |
Late Miocene |
|
Panama |
Graham,A. Contribution toward a Tertiary palynostratigraphy for Jamaica; The status of Tertiary paleobotanical studies in northern Latin America and preliminary analysis of the Guys Hill Member (Chapelton Formation, Middle Eocene) of Jamaica. (In: Biostratigraphy of Jamaica. R.M. Wright and E. Robinson, editors) |
1993 |
| details |
Late Miocene |
|
Panama |
Graham,A. Contribution toward a Tertiary palynostratigraphy for Jamaica; The status of Tertiary paleobotanical studies in northern Latin America and preliminary analysis of the Guys Hill Member (Chapelton Formation, Middle Eocene) of Jamaica. (In: Biostratigraphy of Jamaica. R.M. Wright and E. Robinson, editors) |
1993 |
| details |
Miocene |
Pliocene |
Panama |
Graham,A. Terrestrial Pliocene climates in northern Latin America |
1999 |
| details |
Early Miocene |
|
Panama |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Late Paleocene |
Early Eocene |
North Dakota |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Paleocene |
Early Eocene |
North Dakota |
Hickey,L.J. Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of Western North Dakota. |
1977 |
| details |
Late Eocene |
|
New Mexico |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Middle Eocene |
Early Oligocene |
Mississippi |
Frederiksen,N.O. Mid-Tertiary climate of southeastern Unites States: The sporomorph evidence. |
1980 |
| details |
Pliocene |
|
Mexico(Veracruz) |
Graham,A. Terrestrial Pliocene climates in northern Latin America |
1999 |
| details |
Early Miocene |
|
Mexico(Chiapas) |
Graham,A. Studies in Neotropical paleobotany. XIII: An Oligo-Miocene palynoflora from Simojovel, (Chiapas, Mexico). |
1999 |
| details |
Early Miocene |
|
Mexico(Chiapas) |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Miocene |
|
Maryland |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Late Oligocene |
Middle Miocene |
Delaware |
Groot,J.J. Plant microfossils of the Calvert Formation of Delaware. |
1992 |
| details |
Early Miocene |
|
Costa Rica |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Middle Miocene |
Pleistocene |
Canada(Yukon) |
White,J.M. et al. An 18 million year record of vegetation and climate change in northwestern Canada and Alaska: Tectonic and global climatic correlates. |
1997 |