There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 11187 | H. Sims | 7-11 Mine (clay-ironstone horizon) Westphalian D/Stephanian A - Carboniferous 4-5 - Ohio | McComas (1988) |
| 11188 | H. Sims | 7-11 Mine (dark shale unit) Stephanian A - Carboniferous 5 - Ohio | McComas (1988) |