| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Early Gothlandian | England(Shropshire) | Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. | 1994 | |
| details | Rhuddanian | Aeronian | Norway | Smelror,M. et al. Upper Ordovician-Lower Silurian strata and biota from offshore South Norway | 1997 |