There are 6 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 212997 | M. Clapham | USGS Mesozoic 23361, Fort Peck Late Campanian - Cretaceous 7 - Montana | Jensen and Varnes (1964) |
| 213000 | M. Clapham | USGS Mesozoic 23366, Porcupine Creek Late Campanian - Cretaceous 7 - Montana | Jensen and Varnes (1964) |
| 213073 | M. Clapham | USGS Mesozoic 23369, Porcupine Creek Late Campanian - Cretaceous 7 - Montana | Jensen and Varnes (1964) |
| 213087 | M. Clapham | USGS Mesozoic 23365, Porcupine Creek Late Campanian - Cretaceous 7 - Montana | Jensen and Varnes (1964) |
| 213088 | M. Clapham | USGS Mesozoic 23375, Porcupine Creek, Nashua Late Campanian - Cretaceous 7 - Montana | Jensen and Varnes (1964) |
| 213089 | M. Clapham | USGS Mesozoic 23380, Porcupine Creek Late Campanian - Cretaceous 7 - Montana | Jensen and Varnes (1964) |