There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23469 | S. Holland | Dunleith Formation, Beecher Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Iowa, Illinois | Kolata et al. (1987) |
| 23474 | S. Holland | Dunleith Formation, Rivoli Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Iowa, Illinois | Kolata et al. (1987) |