[G Larry]

"lived about 99 million years ago"

Could we please examine the dating technique?

What is the confidence level once we get past a million years?

[SaveFerris]

[ Could we please examine the dating technique? ]

There’s a date stamped on the back of the neck.

[elbook]

“lived about 99 million years ago”
Could we please examine the dating technique?
What is the confidence level once we get past a million years?

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Probably from the rock strata and other surrounding fossils - Potassium-argon dating (which even with rough million years inaccuracy still indicates it being still a very long time ago)

“excavated from northern Myanmar”