| original |
Campanian |
Maastrichtian |
California |
Chmura,C.A. Upper Cretaceous, (Campanian - Maastrichtian), angiosperm pollen from the western San Joaquin Valley, California, USA. |
1973 |
| original |
Campanian |
Maastrichtian |
California |
Mcleroy,C.A. et al. Upper Cretaceous, (Campanian-Maastrichtian), angiosperm pollen from the western San Joaquin Valley, California. |
1970 |
| details |
Cenomanian |
|
USSR(Siberia) |
Boytsova,E.P. et al. Spread of angiosperm plants on the Territory of the Asiatic Part of the USSR (on palynological data). (In: Life on Ancient Continents: Its Establishment and Expansion.) |
1981 |
| details |
Early Cretaceous |
Cenomanian |
USSR(Far East) |
Boytsova,E.P. et al. Development of Coal Forming angiosperms from the Asian Part of the USSR, (on palynological data). (In: Life on Ancient Continents: Its Establishment and Expansion.) |
1981 |