| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Siegenian | Emsian | 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 | Late Llandoverian | Baltic | Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. | 1963 |