Hello
Here I have two bones.
I think one is an ulna? Maybe turle, but I don't have any experience with turtles. It looks like a juvenil bone, I have the feeling that there should be joints but they are not there (not fused?).
The second one I also have no exprience with. The cortical layer is so ridiculusly thin... It is so light and hollow, I don't know with what to compair it.
Ulna? measurements: 131x32x18mm
Hollow bone measurements: 97x30x20mm
Thank you for any information