Coevolution (or not) between insects and plants

Coevolution (or not) between insects and plants To determine the origin of food selection is difficult. It is evidently much older than the Mesozoic period, as it started in the Paleozoic with the first plants that emerged from the water and the first arthropods that came out of the seas. The habit is very old indeed, and the first millipedes were saprophagous and fed on the spores of the first plants.