On Graptolites, Their Duration in Geological Periods, and Their Value in the Identification of Strata
| Title | On Graptolites, Their Duration in Geological Periods, and Their Value in the Identification of Strata |
| Publication Type | Journal Article |
| Year of Publication | 1850 |
| Authors | Hall, J |
| Journal | Proceedings of the American Philosophical Society |
| Volume | 2 |
| Pagination | 351-352 |
| Keywords | geology paleontology |
