| Date Note | Date of other numbered drawings in Roman numerals by this artist |
| Description | Watercolour and ink drawing, with structural details of scales, fin rays and a tooth, of the fossil fish Gyrodus frontatus Agassiz [Gyrodus hexagonus (Blainville, 1818)], by G A H Köppel, [1836]. Found in the lithographic limestone, Kelheim, from the collection of Georg Graf von Münster, Comte de Münster.
Lightly annotated at top of sheet 'XXXIII' |
| Administrative History | Gyrodus frontatus Agassiz, 1843 is ajunior synonym to Gyrodus hexagonus (Blainville, 1818). |