There are 9 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) |
| 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) |
| 23810 | S. Holland | Sardeson Collection, Scales Shale, Elgin Member, Illinois and Iowa Edenian/Maysvillian - Ordovician 5 - Illinois, Iowa | Catalani (1987) |