Yup, it's definitely reversed normals. For reasons I've never been able to figure out, sometimes reversed normals are that odd, yellowish "parchment" color, and sometimes they are dead black. But you know it's reversed normals when you can't change the color.

If there's a way to fix it in the material room, I'd like to know. Sometimes a little bit of displacement helps, but it doesn't seem to work on the dragon.