| 
Country:
 | 
China 
 | 
| 
Province:
 | 
Shaanxi,Tewo Co.,Quinling Mts. 
 | 
| 
Locality:
 | 
Yiwa ravine 
 | 
| 
Layer:
 | 
Pulai Fm. | 
| 
Lower Boundary:
 | 
MD2B--MD2C:molar.--terebratum Z. [14,30], 390 million years
 
 | 
| 
Upper Boundary:
 | 
MD2C--MD2D:Afromaenioc.GZ base [16,20], 389.3 million years
 
 | 
| 
Georeference:
 | 
 |