Theropod lower left jaw?

[msantix]

Hi,

 

I saw this for sale, apparently a lower left jaw of a small theropod dinosaur. It is 12cm long and from the Kem Kem beds. It also apparently has predation marks on it.  I wanted to ask if indeed this is a theropod lower jaw or if it is something else like a crocodile jaw. Also the description says it is probably from an Abelisaurid,  is it possible to narrow it down to family level?. Thanks.

 

[indominus rex]

The tooth is a possible Abelisaurid or Dromaeosaurid indet. But the jaw could be from a crocodile, not sure.

[gigantoraptor]

The tooth is from an Abelisaurid, there are no known Dromaeosaurids found so far in the Kem Kem Beds. There are no described Abelisaurids here, so sorry, no species or genus level. This fossil looks good to me.

[Spinosaurus]

@LordTrilobite might know if this is a real theropod jaw, i only know it looks cool 

[Troodon]

I'm inclined to say its more likely to be from a Crocodylomorph than theropod.  Theropod jaws do not have an oval crosssection like seen in picture 8.  Teeth like others said are Abelsaurids.  Those marks look like predation ones.

 

Here is a picture of a small bodied Abelsaurid from madagascar you can see how compressed it is

 

[Haravex]

and this brings up another issue one of the images not here that I seen looks to be without teeth, so this would indicate the teeth of an ablesauirde have been composited in?

[Haravex]

[LordTrilobite]

I agree with the others. Abelisaurid teeth that are very likely composited in. Haravex seems to be right on the money as the photos seem to match. And in that last photo it does look like there's some suspicious matrix around that tooth.

 

On the positive side, those scratched do seem like gnaw marks.