| original |
Scythian |
Anisian |
Canada(British Columbia) |
Jansonius,J. Palynology of Permian and Triassic sediments, Peace River area, Western Canada. |
1962 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Late Llandoverian |
|
Sweden |
Staplin,F.L. et al. Evaluation of some acritarchous Hystrichosphere genera. |
1965 |
| details |
Early Triassic |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |