| details |
Llandoverian |
|
South America |
Combaz,A. et al. The "Leiofusidae" Eisenack, 1938. |
1967 |
| details |
Late Ordovician |
Early Gothlandian |
Brazil(Maranhao) |
Brito,I.M. A contribution to the knowledge of Silurian and Devonian microfossils from the Maranhao Basin.5. acritarchs Herkomorphitae Nd Prismatomorphitae |
1971 |
| details |
Ashgillian |
Llandoverian |
Brazil |
Brito,I.M. Stratigraphy of the Parnaiba Basin I. Lower sedimentary sequence |
1979 |
| details |
Silurian |
|
Brazil(Maranhao) |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystricosphaeres and related microfossils. |
1979 |
| details |
Silurian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |