Weevils, part of the Curculionidae superfamily, represent more than 60 separate species. When the fossil record is examined, it appears that these bugs have always existed as weevils, did not evolve from any other life form, have remained unchanged for tens of millions of years and never developed into any other species. One of the proofs is the weevil fossil pictured here. It is between 54 and 37 million years old, and identical to specimens living today.