| Date Note | No annotation indicating that it was drawn for Recherches, however caption is in similar style to others that were. |
| Description | Watercolour study, with scale details, of an incomplete specimen of the fossil fish Ptycholepis bollensis Agassiz, by Joseph Dinkel, [1834-1844]. Found in the Lias, Whitby, from the collection of William Willoughby Cole, 3rd Earl of Enniskillen. |