| original |
Late Cambrian |
|
Italy(Sardinia) |
Di Milia,A. Upper Cambrian acritarchs from the Solanas Sandstone Formation, Central Sardinia, Italy. |
1991 |
| details |
Late Cambrian |
|
Wales(Gwynedd) |
Young,T. et al. Cambrian stratigraphy of St.Tudwal's Peninsula, Gwynedd, Northwest Wales |
1994 |
| details |
Nd |
|
Nd |
Servais,T. et al. A discussion and proposals concerning the Lower Paleozoic "Galeate" acritarch Plexus |
1995 |
| details |
Late Cambrian |
Early Ordovician |
Algeria |
Stricanne,L. et al. A statistical approach to classification of the Cambro-Ordovician galeate acritarch plexus |
2002 |