| 
Country:
 | 
Canada 
 | 
| 
Province:
 | 
Ontario 
 | 
| 
Locality:
 | 
Arkona, Rock Glen, 1.25 mls NE of 
 | 
| 
Layer:
 | 
Widder Shale | 
| 
Lower Boundary:
 | 
mid.--up.varcus Zone             [17,00], 389 million years
 
 | 
| 
Upper Boundary:
 | 
UD1L--UD2A:(frechi Zone base)    [06,10], 374.5 million years
 
 | 
| 
Georeference:
 | 
 |