There are 3 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 106135 | M. Clapham | USNM735w, Old Word Ranch, Glass Mountains Roadian - Permian 3 - Texas | Cooper and Grant (1972) |
| 121970 | M. Clapham | USNM734q, Dugout Mountain, Glass Mountains Kungurian - Permian 2 - Texas | Zimmerman and Cuffey (1987) |
| 122055 | M. Clapham | USNM734l, Hess Canyon, Glass Mountains Roadian - Permian 3 - Texas | Zimmerman and Cuffey (1987) |