There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 90741 | M. Clapham | Porcupine Butte, Kingfisher County Kungurian - Permian 2 - Oklahoma | Clifton (1942) |
| 90742 | M. Clapham | Highway 3, 10.5 km E of Watonga, Blaine County Kungurian - Permian 2 - Oklahoma | Clifton (1942) |
| 90743 | M. Clapham | Mountain View, Kiowa County Kungurian - Permian 2 - Oklahoma | Clifton (1942) |
| 90744 | M. Clapham | Jackson County, Clifton Loc 4 Kungurian - Permian 2 - Oklahoma | Clifton (1942) |