| details |
Barremian |
Aptian |
China(Heilungkiang) |
Gao,R.-Q. Evolutionary trends of Cretaceous angiospermous pollen from the Songliao Basin, northeast China. |
1982 |
| details |
Aquitanian |
Late Helvetian |
Germany |
Rein,U. Possibilities of a pollen stratigraphic subdivision of the Miocene in Northwest Germany. |
1961 |
| original |
Aptian |
Cenomanian |
China(Inner Mongolia) |
Guo,Z. Sporopollen study of the Cretaceous Zhaganlimen Nuoer Formation in the Abagaqi of Xilinguolemen, Inner Mongolia, China |
1982 |
| details |
Albian |
|
Pacific(Sea of Japan) |
Markevich,V.S. A new species of Classopollis from the Cretaceous of the floor of the Sea of Japan. |
1981 |