There are 10 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 10754 | M. Patzkowsky | Cummingsville Fm, MN - Patzkowsky Middle Ordovician - Ordovician 2-3 - Minnesota | Sloan and Kolata (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) |
| 23279 | S. Holland | Sardeson Collection, Prosser Limestone Shermanian - Ordovician 4-5 - Minnesota | Rice and Hedblom (1987) |
| 23280 | S. Holland | Sardeson Collection, Stewartville Formation Edenian - Ordovician 5 - Minnesota | Rice and Hedblom (1987) |
| 23281 | S. Holland | Sardeson Collection, Dubuque Formation Edenian - Ordovician 5 - Minnesota | Rice and Hedblom (1987) |
| 23282 | S. Holland | Sardeson Collection, Maquoketa Formation, Elgin Member Edenian/Maysvillian - Ordovician 5 - Minnesota | Rice and Hedblom (1987) |
| 23283 | S. Holland | Sardeson Collection, Maquoketa Formation, Clermont Member Maysvillian - Ordovician 5 - Minnesota | Rice and Hedblom (1987) |
| 23290 | S. Holland | Decorah Shale at St. Paul, Minnesota Rocklandian/Shermanian - Ordovician 4-5 - Minnesota | Rice (1987) |
| 219965 | P. Wagner | Near Ion. Glyptorthis bellarugosa zonule Rocklandian - Ordovician 4-5 - Minnesota | Kay (1929) |