| details |
Eocene |
|
Japan(Hokkaido I.) |
Tokunaga,S. Fossil pollen and spore from the known coal seams in the Bibai area, Ishikari Coal Field, Hokkaido. |
1955 |
| details |
Early Tertiary |
|
Japan(Hokkaido I.) |
Tokunaga,S. Pollen analysis of the known coal seams in the Biba Bibai area, Sorachi District, Ishikari Coal Fields, Hokkaido. |
1955 |
| details |
Early Tertiary |
|
Japan(Hokkaido I.) |
Tokunaga,S. Palynological study on Japanese Coal.Ii.Pollen stratigraphical investigations in the Coal Fields, Middle Hokkaido. |
1958 |
| details |
Early Tertiary |
|
Japan(Hokkaido I.) |
Tokunaga,S. Palynological study on Japanese Coal. 1. method of pollenanalysis on Japanese Coal. |
1958 |
| details |
Early Tertiary |
|
Japan(Honshu I.) |
Tokunaga,S. Palynological study on Japanese Coal. 1. method of pollenanalysis on Japanese Coal. |
1958 |
| details |
Eocene |
Oligocene |
Japan |
Tokunaga,S. Tertiary plant records from Japan, the microfossils. (In: Ancient Pacific Floras. The Pollen Story. L.M. Cranwell, editor) |
1964 |