| original |
Vendian |
|
Sweden |
Timofeev,B.V. On the micropaleontological characteristics of the Visingso Formation |
1960 |
| details |
Vendian |
|
Sweden |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |
| details |
Vendian |
|
Sweden |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Late Precambrian |
Early Cambrian |
Arizona |
Downie,C. Palynology of the Chuaria Shales of the Grand Canyon. |
1969 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |