| original |
Late Precambrian |
|
France |
Deflandre,G. On the existence, since the Precambrian, of acritarchs of the type Acanthomorphitae. |
1968 |
| details |
Late Precambrian |
|
France |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Precambriam |
|
Canada(Ontario) |
Awramik,S.M. et al. The Gunflint Microbiota. |
1977 |
| details |
Sinian |
|
China(Szechwan) |
Wang,F. et al. The discovery of Baltisphaeridium in the Sinian from Huidong, Sichuan and its significance. |
1987 |
| details |
Huronian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |