Chimera Mandibular Plate - Lower Oxford Clay - species I.D.?

[jacob]

Hello, 

 

I am looking for help identifying a specimen collected during field work for my dissertation. The piece was collected from the Lower Oxford Clay (jason zone) in Peterborough, Cambs. I suspect that it is Ischyodus egertoni, but am not positive whatsoever! Any thoughts would be appreciated

 

Cheers, 

 

Jacob. 

[jacob]

 

[AndyW]

 looks like Brachymylus altidens  Woodward.

[jacob]

Could you recommend any literature on B. altidens? Thank you 

[AndyW]

hi Jacob

 

cdn.palass.org/publications/paleontology/volume_20-part3-pp589-594.pdf

 

Fossils of oxford clay  Martill and Hudson    The  palaeontological association     book.