original |
Early Tertiary |
Recent |
USA |
Chang,S.T. Morphological characteristics of pollen of recent and fossil Liquidambar. |
1958 |
original |
Early Tertiary |
Recent |
Mexico |
Chang,S.T. Morphological characteristics of pollen of recent and fossil Liquidambar. |
1958 |
original |
Early Tertiary |
Recent |
USSR |
Chang,S.T. Morphological characteristics of pollen of recent and fossil Liquidambar. |
1958 |
original |
Oligocene |
|
China(Liaoning) |
Ke et al. Early Tertiary spores and pollen grains from the Coastal Region of Bohai |
1978 |
original |
Middle Eocene |
Late Oligocene |
China(Hopei) |
Sung,T.C. et al. Early Tertiary spores and pollen grains from the Coastal Region of Bohai. |
1978 |