There are 15 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23789 | S. Holland | Sardeson Collection, Pecatonica Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23790 | S. Holland | Sardeson Collection, Mifflin Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23791 | S. Holland | Sardeson Collection, Grand Detour Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23792 | S. Holland | Sardeson Collection, Nachusa Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23794 | S. Holland | Sardeson Collection, Quimbys Mill Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23795 | S. Holland | Sardeson Collection, Spechts Ferry Formation, Illinois and Iowa Blackriveran/Rocklandian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 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) |
| 23802 | S. Holland | Sardeson Collection, Dunleith Formation, Mortimer Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23803 | S. Holland | Sardeson Collection, Dunleith Formation, Rivoli Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23804 | S. Holland | Sardeson Collection, Dunleith Formation, Sherwood Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23805 | S. Holland | Sardeson Collection, Dunleith Formation, Wall Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23806 | S. Holland | Sardeson Collection, Dunleith Formation, Wyota Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa | Catalani (1987) |
| 23807 | S. Holland | Sardeson Collection, Wise Lake Formation, Sinsinawa Member, Illinois and Iowa Edenian - Ordovician 5 - Illinois, Iowa | Catalani (1987) |