There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 76852 | W. Kiessling | Pitkin mud mounds, type 1 (= Reef 2272) Chesterian - Carboniferous 2-3 - Arkansas | Webb (1987) |
| 76853 | W. Kiessling | Pitkin mud mounds, type 2 (= Reef 2274) Chesterian - Carboniferous 2-3 - Arkansas | Webb (1987) |