| 
Country:
 | 
USA 
 | 
| 
Province:
 | 
Arkansas, Madison Co. 
 | 
| 
Locality:
 | 
Drakes Creek, sec.29, T.16N., R.27W. 
 | 
| 
Layer:
 | 
Fayetteville Fm., middle portion | 
| 
Lower Boundary:
 | 
UAR basal--lower shale of Fayetteville, 327 million years
 
 | 
| 
Upper Boundary:
 | 
UAR Limest.--upper shale of Fayetteville, 324.8 million years
 
 | 
| 
Georeference:
 | 
 |