Mayflies have remained unaltered over the course of some 100 million years, and are yet another of the many life forms that challenge evolution. All mayfly fossils show that these insects did not develop in stages, but that they emerged suddenly on the Earth, together with all their characteristics. Furthermore, they have never changed throughout all the time they appear in the fossil record. This demonstrates that, like all other living things, mayflies did not evolve, but were created.