postdiction

In a classic test of evolutionary “post-diction” (predicting what should be found in the fossil record), scientists made a bold prediction of what insect ears would look like before the evolution of bats. Believing that the presence of bats, a new predator with sonar, would spur the evolution of insect ears, the scientists predicted that earlier insects would have less-developed ears, or none at all. Then they found exceptionally-preserved insect fossils from the Green River formation in Wyoming, and compared the fossil evidence with their prediction. What was found?