Insect fossils form in the same way as normal fossils, but the exoskeleton is usually the only thing that is left. One special type of insect fossil is when it is preserved in amber. Amber is tree sap that oozed over and covered the insect, then hardened.
Graphic of insect trapped in amber by Carli, Kory, and Dominique
Click HERE to see a cool video of a tick fossil. (Note: You have to let it load, then click the triangle play button.)
