| details |
Scythian |
Anisian |
Canada(British Columbia) |
Sarjeant,W.A.S. Taxonomic notes on hystrichospheres and acritarchs. |
1964 |
| details |
Caradocian |
|
Portugal |
Sarjeant,W.A.S. Taxonomic notes on hystrichospheres and acritarchs. |
1964 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Caradocian |
|
Portugal |
Elaouad-Debbaj,Z. Late Ordovician acritarches of the Bucaco Syncline (Portugal); systematics-biostratigraphy-paleogeographic interests. |
1978 |
| details |
Caradocian |
|
Portugal |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Early Triassic |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |