There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 10391 | S. Holland | Harding Formation Trilobites Caradoc - Ordovician 4-5 - Colorado | Frederickson and Pollack (1952) |
| 170686 | M. Hopkins | Harding Formation Trilobites B Caradoc - Ordovician 4-5 - Colorado | Frederickson and Pollack (1952) |