| Date Note | Likely to have been commissioned for paper read before the Society in April 1849, and published in 1850. |
| Description | Watercolour study, with scale details, of an incomplete specimen of the fossil fish Palaeoniscus Beaumonti Agassiz, by Joseph Dinkel, [1847-1849]. Found in coal shale, Autun, from the collection of William Willoughby Cole, 3rd Earl of Enniskillen. |
| Publication Note | Scale details from the drawing are published in: Egerton, P de M E. "Palichthyologic Notes. No. 3.—On the Ganoidei Heterocerci", 'Quarterly Journal of the Geological Society', vol 6 (1850), pp1-10, plate 1, figs 5-6. |