| original |
Late Bajocian |
Early Bathonian |
France(Normandie) |
Valensi,L. On some planktonic microorganisms from Middle Jurassic flint of Poitou and Normandy. |
1949 |
| details |
Bajocian |
Bathonian |
France(Poitou) |
Valensi,L. Microfossils from flint of the Middle Jurassic. Petrographic remarks. |
1953 |
| details |
Bajocian |
|
France(Poitou) |
Valensi,L. Microfossils from flint of the Middle Jurassic. Petrographic remarks. |
1953 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Nd |
|
Nd |
Deflandre,G. et al. Critical remarks on the genus Micrhystridium, Deflandre. |
1965 |
| details |
Bajocian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |