| Date Note | Likely to have been commissioned for paper read before the Society in April 1849, and published in 1850. |
| Description | Watercolour study of a complete specimen of the fossil fish Palaeoniscus decorus Egerton, by Joseph Dinkel, [1847-1849]. Found in coal shale, Commenterie, Auvergne, from the collection of William Willoughby Cole, 3rd Earl of Enniskillen. |