| Citation | Smith, J.A., 1863, Notice of the ukpam, a large species (probably new) of sting ray (Trygon, Cuv.), found in the Old Calabar River, Africa.. Proc. R. Phys. Soc. Edinb. 2:64-69. |
| Ref. | 97748 Smith, J.A., 1863 |
| Page | 69 |
| Named Used as Valid | Hemitrygon ukpam |
| Comment | original description of Hemitrygon ukpam |
| Locality | 'Old Calabar River, Africa' |
| Distribution | rivers of Old Calabar, West Africa |
| Quote |