| Date Note | Date of another drawing by Bourkhardt of this collection |
| Description | Watercolour, pencil and ink drawing, with profile, of a tooth from the fossil fish Placodus impressus Agassiz, probably by Jacques Bourkhardt, [?1835]. Found in Gres bigarre [variegated sandstone], Zweibrücken, from the collection of Alexander Braun. |
| Administrative History | There is a later annotation attributing the small drawings on the sheet to Sixtus Heinrich Jarwart, however they do not match his artistic style. They are closer to the work of Jacques Bourkhardt. The majority of the drawings from Alex Braun's collection were undertaken by his sister Cecilie, Agassiz's first wife, however when in 1835 she 'retired' from drawing to concentrate on rearing her young family, and Jacques Bourkhardt seems to have been one of the artists appointed to replace her. |