Coracoid or Not?

[DAS_Rex]

I got this little broken specimen some time back.

I just liked the color and look of it and set it to the side. It was said to be from Lance Creek in Weston County, Wyoming.

 

The seller thought it might be a Thescelosaurus coracoid, and I never questioned it. I was looking at it lately though and noticed it really didn’t look quite right compared to others I have seen.

 

Looking through the 1972 champsosaurus paper by Bruce R. Erickson and I noticed two of the illustrations looked very familiar. Could this be a Champsosaurus pubis? (left side I believe).

 

I think there even seems to be a possible anterior tubercle with scaring as in the figures.  (Red arrow pointing that out in one photo, and I included the Erickson,1972 images as well for quick reference)

 

 

[Alex S.]

My vote would be not thescelosaur coracoid as the shape is off and the foramen doesn't line up with where I would expect it to be in regards to a presumably missing glenoid fossa that would be where the thicker piece of bone is. I'm not familiar with champosaur material though and regardless wait for others to chime in.