| details |
Paleozoic |
|
Nd |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |
| details |
Oxfordian |
|
England(Yorkshire) |
Sarjeant,W.A.S. Microplankton from the Ampthill Clay of Melton, South Yorkshire |
1962 |
| details |
Early Oxfordian |
|
England(Yorkshire) |
Sarjeant,W.A.S. Microplankton from the Corallian rocks of Yorkshire. |
1960 |
| details |
Late Bathonian |
Callovian |
France(Cher) |
Valensi,L. Micropaleontologic study of flint from the Magdelenian of Saint Amand, (Cher). |
1955 |
| 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 |
| original |
Bajocian |
Bathonian |
France(Normandie) |
Valensi,L. On some planktonic microorganisms from Middle Jurassic flint of Poitou and Normandy. |
1949 |