There are 5 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 10754 | M. Patzkowsky | Cummingsville Fm, MN - Patzkowsky Middle Ordovician - Ordovician 2-3 - Minnesota | Sloan and Kolata (1987) |
| 23092 | S. Holland | Wagner Quarry Cystoid Bed, Goodhue County, MN Shermanian - Ordovician 4-5 - Minnesota | Sloan and DesAutels (1987) |
| 23277 | S. Holland | Sardeson Collection, Decorah Shale Rocklandian/Shermanian - Ordovician 4-5 - Minnesota | Rice and Hedblom (1987) |
| 23278 | S. Holland | Sardeson Collection, Cummingsville Formation Shermanian - Ordovician 4-5 - Minnesota | Rice and Hedblom (1987) |
| 23290 | S. Holland | Decorah Shale at St. Paul, Minnesota Rocklandian/Shermanian - Ordovician 4-5 - Minnesota | Rice (1987) |