| details |
Nd |
|
Nd |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Late Bajocian |
Callovian |
Canada(W.Canada) |
Pocock,S.A.J. Palynology of the Jurassic sediments of western Canada. Part 2. Marine species. |
1972 |
| details |
Jurassic |
|
France(Jura) |
Courtinat,B. Evidence or reality in the genus Micrhystridium. An example taken from the study of a few Jurassic forms from the French Jura. |
1983 |
| details |
Cuisian |
Lutetian |
Czechoslovakia(Slovensko) |
SnopkovŠ,P. Biostratigraphy of the Lubovniakskay Avrchovina Upland based on microflora. (In: Zbornik Z paleontologickej Konference; Sucasne problemy a trendy V Caskovlovenskej paleontologii, O.Samuel Edi |
1989 |
| details |
Bathonian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Bathonian |
|
France(Poitou) |
Pocock,S.A.J. Palynology of the Jurassic sediments of western Canada. Part 2. Marine species. |
1972 |