In the classification of living things, arthropods represent a sub-phylum within the phylum Insecta. The earliest insect fossils date back to the Devonian Period (417 to 354 million years ago). One major dilemma for evolutionists is the way that species that existed 400 million years ago are no different from their counterparts alive today.The same applies to grasshoppers, which have remained unchanged from the time they first appeared in the fossil record. The grasshopper pictured confirms that 100-million-year-old grasshoppers were identical in every way to present-day grasshoppers, thus refuting evolution.