Palaeodictyoptera
In addition to the normal four wings, they had two "pronota" in front. These pronota were smaller than the regular wings, but had wing veins just like the real things. They did not move up and down, so maybe they helped gliding. The Palaeodictyoptera are sometimes whimsically called "six-winged insects". The actual wings are often boldly marked: the patterns of colour can be seen in fossils.