There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 10380 | S. Holland | Harding Formation Caradoc - Ordovician 4-5 - Colorado | Sweet (1954) |
| 155756 | P. Wagner | Harding Quarry, northwest of Cañon City Franklinian - Ordovician 4-5 - Colorado | Sansom et al. (1997) |