There are 3 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23799 | S. Holland | Sardeson Collection, Dunleith Formation, Beecher Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Rice and Hedblom (1987) |
| 23800 | S. Holland | Sardeson Collection, Dunleith Formation, Eagle Point Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23801 | S. Holland | Sardeson Collection, Dunleith Formation, Fairplay Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |