26" mesosaur

Something looks wrong on this one. The bones of the hips don't look right.

They do look somewhat different than the other mesosaurs that I have, but as careful as I can examine the matrix and the bones, I can not see any matrix differences that indicate matrix additions/repairs, and the skeletal parts in the area of the hips appear original. So you are correct in your observations, but I can't explain the oddity.