‘An unusual one’: human skull found in Goodwill donation box in Arizona

That’s one way to dispose of a body.

"... what appears to be a missing mandible." I'm trying to imagine scenarios that make this wording make sense. "It appeared to be a missing mandible but due to a rare mutation, it was actually a missing hand." or "It appeared to be a missing mandible but really it was just so small we couldn't find it."