| details |
Early Cretaceous |
|
China(Liaoning) |
Xu,Y. Sporo-pollen assemblage of the Lower Cretaceous Shahai Formation in Fuxin District of Liaoninig |
1985 |
| details |
Late Aptian |
|
Colombia |
Streinesberger,L.V. et al. Dating the Yavi Formation (Aptian, Upper Magdalena Valley, Colombia), palynological results. |
1994 |
| details |
Aptian |
|
Colombia |
PrŠ¶ssl,K.F. et al. The Yavi Formation (Lower Cretaceous), Upper Magdalena Valley Colombia; An integrated sedimentological and palynological study. |
1993 |
| details |
Nd |
|
Nd |
Fensome,R.A. Taxonomy and biostratigraphy of Schizaealean spores from the Jurassic-Cretaceous boundary beds of the Aklavik Range, District of MacKenzie |
1987 |
| original |
Middle Albian |
|
Canada(Alberta) |
Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) |
1983 |