[Tax-chick]

The conclusions come from analysis of different forms of the elements oxygen and strontium in his tooth enamel.

Yeah, maybe ...

The face that a person buried in the Mediterranean basin somewhere had such-and-such in his teeth does not prove that people who lived and died in other areas of the world did not also have such-and-such in their teeth.

The amber necklace clearly indicates trade with continental Europe, but the origin of the person is a lot of guesswork.

[muawiyah]

The isotopes of various elements in his teeth demonstrate where he lived and what he ate.

Archaeologists as well as forensic scientists have been doing this stuff for many years.