Meganeura+giant+dragonfly

meganerua means large-veined, you can probably figure out why its called that hence the large veins in the meganeua's wings. the reason the meganeura is so big is the amout of oxygen that covered the earth (about 40% greater then todays oxygen) the more oxygen the bugs take in, the larger they grow.


 * =====Wingspan of more than 75 cm (2.5 ft) wide =====
 * 300 million years ago
 * It is the largest known flying insect Species to ever appear on Ear th
 * They can fly up to 70 mph