Mosasaur Jaw Fragment or other bone?

[MaximusTN]

Please help identify a bone fragment that was found at the W.M. Browning Cretaceous Fossil Park in Baldwyn, MS. The item is interesting in that it has flat surfaces on what appears to be the top and bottom. Neither surface is porous. The bottom has more area above it that is solid. Dimensions are approx 1” L x 1/2” W x 1/2” T. 
 

Thanks for the feedback. 
 

 

[Rockwood]

I'm afraid all that can be said with any certainty is that you have a fragment which displays both cortical (dense) and spongy (cancellous) bone. 

[MaximusTN]

Thanks for looking. Was hoping those two flat sides would give some clues about location. I figured it was a shot in the dark. 

[Fossildude19]

Chunk-O-Saur. 

[Kane]

Topic unhidden.

[David in Japan]

I think it might be a turtle shell fragment. You can still see the weared shell pattern on the 3rd photo.

Edited November 9, 2021 by David in Japan

[Rockwood]

2 minutes ago, David in Japan said:

Looking a lot like a turtle shell to me.

Yes, I toyed with the idea. I couldn't be at all certain of it though.

[fossil_lover_2277]

This is definitely a turtle shell fragment.