There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 18825 | J. Alroy | Black Butte (UO 2344) Clarendonian - Cenozoic 5-6 - Oregon | Shotwell and Russell (1963) |
| 18831 | J. Alroy | Black Butte (UO 2500) Clarendonian - Cenozoic 5-6 - Oregon | Shotwell (1970) |