This Is The Largest Known Insect of All Time, With a Wingspan of 2.5 ft (75 cm)

When you step on a cockroach, there is that crunchy sound which some people find pleasing, while others detest. It is made by the squeezing and cracking of the exoskeleton, which is particularly hard in the case of cockroaches. In other insects, however, the exoskeleton is not always so hard, and different parts of the body may have varying solidity.

The most resilient body parts of griffinflies, on the other hand, are the wings, and so they are the parts that are most likely to be fossilized. Therefore, most fossil records of griffinflies consist of fragmentary specimens, with a few spectacular exceptions.