| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Tremadocian | Arenigian | China(Shanghai) | Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. | 1986 |
| details | Middle Devonian | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |