| details |
Early Devonian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Emsian |
Early Eifelian |
Bolivia |
Suarez-Soruco,R. et al. The Eo-Hercynian compression stage in the eastern part of the Cordillerana Basin of Bolivia. |
1983 |
| details |
Givetian |
|
Ohio |
Wicander,R. et al. Systematics and biostratigraphy of the organic-walled microphytoplankton from the Middle Devonian, (Givetian), Silica Formation, Ohio, USA. |
1981 |
| details |
Middle Devonian |
|
Brazil |
Brito,I.M. Stratigraphy of the Parnaiba Basin I. Lower sedimentary sequence |
1979 |
| details |
Early Devonian |
|
Brazil(Maranhao) |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Vol.5 Acritarcha. |
1979 |
| details |
Gedinnian |
Strunian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. 2: Index to Parts 1 and 2. |
1977 |
| details |
Middle Devonian |
|
Paraguay |
Volkheimer,W. et al. Stratigraphic significance of Paleozoic and Mesozoic microflora from Argentina and neighboring countries. |
1976 |
| details |
Eifelian |
Givetian |
Paraguay |
PŠ¶the de Baldis,E.D. Microplankton of the Middle Devonian of Paraguay. |
1974 |
| details |
Emsian |
Frasnian |
Ghana |
Anan-Yorke,R. Devonian chitinozoa and acritarcha from exploratory oil wells on the shelf and coastal region of Ghana, West Africa. |
1974 |
| details |
Early Devonian |
Late Devonian |
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 |
Siegenian |
Givetian |
South America |
Combaz,A. et al. The "Leiofusidae" Eisenack, 1938. |
1967 |
| details |
Middle Devonian |
Late Devonian |
|
Lange,F.W. Biostratigraphic subdivision and correlation of the Devonian in the Parana Basin |
1967 |