fish jaw?

fish jaw?

Observation - fish jaw?. Description: Found on a beach in Northumberland, not sure what this came from- suppose fish/shark of some kind? Teeth backward pointing. the 'bone' of the jaw is very cartilaginous. Any help much appreciated!

Found on a beach in Northumberland, not sure what this came from- suppose fish/shark of some kind? Teeth backward pointing. the 'bone' of the jaw is very cartilaginous. Any help much appreciated!