These pictures aren't the best, but when I align the triangle hole to a picture of a nodosaur, most of the facial characteristics are exactly where they should be. This includes the line of the lip, the jawbone thing, the eye lid or whatever that is, etc. When you peer into the eye, you what looks like 3 spider legs perfectly fossilized. These must be veins, tendons, or ligaments. Theres a bunch of these on the other side of the face, along with what appears to be the meninges or dural matter. Two more facts on this heavy 15 inch piece - the optic nerve is about the size of a nickel and fossilized a crystal sandy color. Also, when I put the diamond tester to it, it goes right off. What do you think?