| details |
Cambrian |
|
Nd |
Eisenack,A. Hystricosphaeres |
1963 |
| details |
Early Permian |
|
Nd |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Nd |
|
Nd |
Cramer,F.H. et al. Taxonomic considerations on the acritarchs of the Middle and Upper Silurian of northern Spain. |
1968 |
| details |
Late Paleozoic |
|
Nd |
Medvedeva,A.M. et al. An electron-Microscopic study of Upper Paleozoic acritarchs from rocks and oils |
1983 |
| details |
Ordovician |
Permian |
Nd |
Rudavskaya,V.A. Hystrichosphaerida of the Paleozoic Era |
1965 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Nd |
|
Nd |
Staplin,F.L. et al. Evaluation of some acritarchous Hystrichosphere genera. |
1965 |
| details |
Tremadocian |
|
Nd |
Combaz,A. Palynofacies. |
1964 |
| details |
Ordovician |
Cretaceous |
Nd |
Evitt,W.R. Observations on the morphology of fossil dinoflagellates. |
1961 |
| details |
Nd |
|
Nd |
Potonie,R. et al. Principal aspects of the development of the palynology of the Carboniferous. |
1964 |
| details |
Nd |
|
Nd |
Schopf,J.M. Systematics and nomenclature in palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Nd |
|
Nd |
Evitt,W.R. A discussion and proposals concerning fossil dinoflagellates, Hystrichospheres, and acritarchs. II. |
1963 |
| details |
Ordovician |
Permian |
Nd |
Downie,C. The geological history of the microplankton. |
1967 |
| details |
Nd |
|
Nd |
Brito,I.M. The acritarchs |
1967 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. The Hystrichospheres. A review and discussion. |
1961 |
| details |
Carboniferous |
|
Nd |
Rudavskaya,V.A. Palaeozoic Hystrichospheres. |
1969 |
| details |
Permian |
|
Nd |
Rudavskaya,V.A. Palaeozoic Hystrichospheres. |
1969 |