| original |
Tremadocian |
|
Algeria |
Deunff,J. A microplankton of hystrichospheres in the Tremadocian of the Sahara. |
1961 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Tremadocian |
|
England(Shropshire) |
Rasul,S.M. et al. The stratigraphic distribution of Tremadoc acritarchs in the Shineton Shales succession, Shropshire, England. |
1974 |
| details |
Early Paleozoic |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Tremadocian |
|
Algeria |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystricosphaeres and related microfossils. |
1979 |
| details |
Tremadocian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |