| original |
Early Portlandian |
|
France |
Reyre,Y. Stereoscan observations on the pollen genus Classopollis, Pflug,1953. |
1970 |
| details |
Late Jurassic |
|
France |
Petrosyants,M.A. et al. Characteristic and correlative Gymnosperm pollen Taxa, (Late Cretaceous-Paleogene) Cheirolepidiacea pollen. Synopsis. |
1983 |
| details |
Nd |
|
Nd |
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 |
| details |
Middle Jurassic |
|
|
Morbelli,M.A. et al. The genus Classopollis in Argentina |
1984 |