There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23809 | S. Holland | Sardeson Collection, Dubuque Formation, Illinois, 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) |