Date Note | Watermark of paper, other drawings by Dinkel of the Philpot collection are dated 1835 |
Administrative History | Collected/drawn as part of the research for Louis Agassiz's 'Recherches sur les Poissons Fossiles' (1833-1843/1844). |
CustodialHistory | From a folder marked 'Pachycormus & Sauropsis' |