| details |
Quaternary |
|
Wyoming |
Santucci,V.L. The Yellowstone Paleontological Survey. |
1998 |
| details |
Eocene |
|
China(Qinghai) |
Zhai,Y. et al. The Tertiary System of Gansu Province. |
1984 |
| details |
Early Tertiary |
|
China(Kansu) |
Zhai,Y. et al. The Tertiary System of Gansu Province. |
1984 |
| details |
Middle Eocene |
|
Canada(British Columbia) |
Dillhoff,R.M. et al. The McAbee flora of British Columbia and its relation to the Early-Middle Eocene Okanagan Highlands flora of the Pacific Northwest. |
2005 |
| details |
Paleogene |
|
Russia(Novosibirsk) |
|
2004 |