| details |
Early Miocene |
Middle Miocene |
Wyoming |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Oligocene |
Miocene |
Colorado |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Oligocene |
|
Montana |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Miocene |
|
Idaho |
Cross,A.T. et al. Additions to the Upper Miocene Succor Creek flora, eastern Oregon. |
1971 |
| details |
Late Neogene |
Recent |
Nd |
Muller,J. Palynological evidence on Early differentiation of angiosperms. |
1970 |
| details |
Late Neogene |
Pleistocene |
Japan(Honshu I.) |
Onishi,I. Pollen flora of the Kazusa Group in the Boso Peninsula, Japan. |
1969 |
| details |
Miocene |
|
USA(Pacific Northwest) |
Gray,J. Northwest American Tertiary palynology. (In: Ancient Pacific Floras. The Pollen Story. L.M. Cranwell, editor) |
1964 |
| details |
Late Miocene |
|
Oregon |
Graham,A. Systematic revision of the Sucker Creek and Trout Creek Miocene floras of southeastern Oregon. |
1963 |
| details |
Late Neogene |
|
Wyoming |
Love,J.D. Reconnaissance study of Quaternary Faults in and South of Yellowstone National Park, Wyoming |
1961 |
| details |
Clarendonian |
|
Arizona |
Gray,J. Tertiary pollen flora from the basin and range Provence, Arizona. |
1960 |