| details |
Silurian |
Devonian |
Algeria |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Ludlovian |
|
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. 2: Index to Parts 1 and 2. |
1977 |
| original |
Silurian |
Devonian |
Africa(Sahara) |
Deflandre,G. On the preservation of pyritized remains of Deflandastrum, (Chlorophyceae), and on a curious new form from the Siluro-Devonan of North Africa. |
1967 |
| original |
Late Gothlandian |
|
Africa(Sahara) |
Deflandre,G. On the preservation of pyritized remains of Deflandastrum, (Chlorophyceae), and on a curious new form from the Siluro-Devonan of North Africa. |
1967 |