References
- Annals of Nat. Hist. , ii 321 – 321 . ser. 4
- Beiträge zur Petrefactenkunde 38 – 38 . 2tab. 15. f. 10–14.
- Poissons Fossiles , iii 375 – 375 .
- Geological Magazine , v 495 – 495 .
- Geological Magazine , vi 381 – 381 .
- see Nat. Hist. Trans. of Northumberland and Durham iii 295 295