| original |
Tremadocian |
Arenigian |
China(Shanghai) |
Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. |
1986 |
| original |
Late Ludlovian |
|
Libya |
Le H©riss©,A. Paleoecology, biostratigraphy and biogeography of late Silurian to early Devonian acritarchs and prasinophycean phycomata in well A161, Western Libya, North Africa |
2002 |
| details |
Sparnacian |
|
France(Paris Basin) |
Aubry,M.-P. et al. The Sparnacian deposits of the Paris Basin: A lithostratigraphic classification. |
2005 |