A day at the museum

Every time I go out, I've got teeth on my mind.  A trip to the museum is no different.  I spotted this at the Penn Museum:

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Its the skull and helmet of a young man as he was excavated from his tomb, flattened by the earth above.  The skull is over 4,500 years old and was found in the ancient city of Ur in Mesopotamia.  If anyone out there is reading this --- do you notice anything peculiar about his teeth?  Anything stand out to you?  Let me know in the comments section below...