There are 5 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 89042 | B. Kröger | Decorah (= Upper Mississippi Valley) Blackriveran/Kirkfieldian - Ordovician 4-5 - Iowa | Flower (1952) |
| 164473 | P. Wagner | Decorah Rocklandian - Ordovician 4-5 - Iowa | Cooper (1956) |
| 219962 | P. Wagner | Rochester Rocklandian - Ordovician 4-5 - Minnesota | Emerson and Simo (2006) |
| 219964 | P. Wagner | Ion Rocklandian - Ordovician 4-5 - Minnesota | Kay (1929) |
| 219965 | P. Wagner | Near Ion. Glyptorthis bellarugosa zonule Rocklandian - Ordovician 4-5 - Minnesota | Kay (1929) |