| details |
Late Albian |
Cenomanian |
Australia(W.Australia) |
Cookson,I.C. et al. Microfossils of Australian Mezosoic and Tertiary sediments. Second part. |
1982 |
| details |
Nd |
|
Nd |
Le H©riss©,A. Acritarchs and cysts of Prasinophycean algae of the Silurian of Gotland, Sweden. |
1989 |
| details |
Tarannon |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Llandoverian |
Early Wenlockian |
Canada(Ontario) |
Eley,B.E. et al. Acritarchs from the fossil Hill Formation (Silurian) of Southern Ontario, Canada |
1992 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |