original |
Aptian |
Albian |
South Dakota |
Cahoon,E.J. Lower Cretaceous pollen and spores from the Southern Black Hills |
1965 |
original |
Tertiary |
|
Canada(British Columbia) |
Hopkins,W.S. Palynology of Tertiary rocks of the Whatcom Basin, southwest British Columbia, and northwest Washington. |
1966 |
original |
Tertiary |
|
Washington |
Hopkins,W.S. Palynology of Tertiary rocks of the Whatcom Basin, southwest British Columbia, and northwest Washington. |
1966 |
original |
Middle Eocene |
Late Eocene |
Canada(British Columbia) |
Hopkins,W.S. Palynology of the Eocene Kitsilano Formation, Southwest British Columbia. |
1969 |
original |
Early Oligocene |
|
Canada(British Columbia) |
Piel,K.M. Palynology of Oligocene sediments from Central British Columbia |
1971 |
original |
Middle Eocene |
|
Tennessee |
Potter,F.W. Investigations of angiosperms from the Eocene of southeastern North America pollen assemblages from Miller Pit, Henry County, Tenessee. |
1976 |