| Description | Detailed, pencil drawing of a tooth plate from the fossil fish Psammodus rugosus Agassiz, found in mountain limestone, Esky, County Sligo, Ireland, possibly by Henry Hogard, [1837]. From the collection of Lord Cole [William Willoughby Cole, later 3rd Earl of Enniskillen]. |
| Administrative History | Although in the unpublished series, image appears in 'Recherches sur les Poissons Fossiles' (1833-1843/1844), see below. |
| CustodialHistory | From a folder marked 'Psammodus, Helodus, Strophodus, Ctenoptychius, Petalodus' |