There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 10380 | S. Holland | Harding Formation Caradoc - Ordovician 4-5 - Colorado | Sweet (1954) |
| 10391 | S. Holland | Harding Formation Trilobites Caradoc - Ordovician 4-5 - Colorado | Frederickson and Pollack (1952) |