| Description | Proof lithograph of specimens of the fossil fish Dipterus brachypygopterus, one of the plates of illustrations from Adam Sedgwick's and Roderick Impey Murchison's paper, "On the Structure and Relations of the Deposits contained between the Primary Rocks and the Oolitic Series in the North of Scotland", 'Transactions of the Geological Society of London' Series 2, Volume 3 (1829), pp125-160, plate XVII. |
| Administrative History | Collected/drawn as part of the research for Louis Agassiz's 'Recherches sur les Poissons Fossiles' (1833-1843/1844). Published. |