There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 11189 | H. Sims | Mazon Creek Westphalian - Carboniferous 4 - Illinois | Pfefferkorn (1979) |
| 12919 | R. Gastaldo | Roof Shale of the Springfield Coal (Illinois Basin) Carboniferous - Carboniferous 1-5 - Illinois | Dimichele and Nelson (1989) |