| Date Note | Fossil genus first recognised by W Buckland in 1835, date of publication. |
| Administrative History | The specimen is first referenced in: Buckland, W, "On the fossil beaks of four extinct species of Fishes, referrible to the genus Chi- msera, that occur in the Oolitic and Cretaceous formations of England" [1835], Proceedings of the Geological Society, vol 2 (1838), pp205-206. |