| original |
Middle Oligocene |
|
W.Germany |
Maier,D. Investigation of plankton in Tertiary and Quaternary marine sediments. |
1959 |
| details |
Middle Oligocene |
|
W.Germany |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |
| details |
Middle Oligocene |
|
W.Germany |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Nd |
|
Nd |
Lentin,J.K. et al. Fossil dinoflagellates: index to genera and species. |
1973 |
| details |
Middle Oligocene |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |