Wonder what a JW would say?
I know many JWs who would say "you can't trust scientific dating methods. You see, when the water canopy above the earth came down during Noah's flood, it changed the amount of radiation reaching the earth's surface and thus all dating systems which produce an age more than 4000 years ago are flawed. Thus, your 'flea in amber' is really only about 4000 years old, not 15 million."
You would have far more success trying to persuade a piece of gravel to accept the Keynesian economic model, than using facts to reason with a JW, if those facts conflict with their interpretation of the Bible.