Snakeflies are a group of insects comprising the order Raphidioptera, which is divided into two families: Raphidiidae and Inocelliida consisting of roughly 260 species. Together with the Megaloptera they were formerly placed within the Neuroptera, but now these two are generally regarded as separate orders. Members of this order have been considered living fossils, as the phenotype of a species from the early Jurassic period (140 million years ago) closely resembles modern-day species.