| details |
Nd |
|
Nd |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Early Permian |
|
United Kingdom |
Wall,D. et al. Permian Hystrichospheres from Britain. |
1963 |
| details |
Early Permian |
|
United Kingdom |
Wall,D. et al. Permian Hystrichospheres from Britain. |
1963 |
| details |
Early Permian |
|
United Kingdom |
Wall,D. et al. Permian Hystrichospheres from Britain. |
1963 |
| details |
Early Permian |
|
United Kingdom |
Wall,D. et al. Permian Hystrichospheres from Britain. |
1963 |
| details |
Early Gedinnian |
|
Spain |
Cramer,F.H. A provisional note on the occurrence of microplankton and sporomorphs in the sedimentary rocks of the Lower Devonia in the Cantabrian Mountains |
1963 |
| details |
Paleozoic |
|
Nd |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |