| Date Note | Agassiz visits Bristol in autumn 1834; dates Dinkel known to have drawn Bristol collections |
| Description | Watercolour drawing of a fragment of a fin spine of the fossil fish Onchus hamatus Agassiz, attributed to Joseph Dinkel, [1834-1836]. According to the printed text, the specimen was from the Carboniferous Limestone, and in the Bristol Museum [?Bristol Institution]. Also, small ink drawing showing the texture of the spine. |