There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23557 | S. Holland | Platteville Formation Gastropoda and Monoplacophora, Minnesota Blackriveran/Rocklandian - Ordovician 4-5 - Minnesota | Sloan and Webers (1987) |
| 23579 | S. Holland | Cummingsville Formation Gastropoda and Monoplacophora, Minnesota Shermanian - Ordovician 4-5 - Minnesota | Sloan and Webers (1987) |
| 23584 | S. Holland | Prosser Limestone Gastropoda and Monoplacophora, Minnesota Shermanian - Ordovician 4-5 - Minnesota | Sloan and Webers (1987) |
| 23588 | S. Holland | Stewartville Formation Gastropoda and Monoplacophora, Minnesota Edenian - Ordovician 5 - Minnesota | Sloan and Webers (1987) |