| Date Note | Dinkel's arrival in Britain; published 1852. |
| Description | Watercolour study, with scale details, of a complete specimen of the fossil fish Ptycholepis minor Egerton, by Joseph Dinkel, [1834-1852]. Found in the Lias, Barrow-on-Soar, from the collection of William Willoughby Cole, 3rd Earl of Enniskillen. |
| Publication Note | Black and white lithographic version of drawing with description of fossil published in 'Memoirs of the Geological Survey...illustrative of British Organic Remains', Decade VI'. London: Longman, Green, Longman and Roberts (1852), p1, plate VII, figs 2-5. |