There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 17046 | J. Alroy | 2.5 Mi. Northeast of Chadron Orellan - Cenozoic 4 - Nebraska | Patterson and McGrew (1937) |
| 17049 | J. Alroy | 8 Mi. Northeast of Harrison Orellan - Cenozoic 4 - Nebraska | Patterson and McGrew (1937) |
| 17051 | J. Alroy | 12 Mi. NNW of Crawford Orellan - Cenozoic 4 - Nebraska | Patterson and McGrew (1937) |
| 17150 | J. Alroy | North of Zerbst Ranch (Upper) Orellan - Cenozoic 4 - Nebraska | McGrew (1937) |