The first documented occurrence of Phyllophagy in Pre-Cretaceous insects: Leaf tissues in the gut of Upper Jurassic insects from Southern Kazakhstan.
Reference:
Rasnitsyn,A.P. et al. (2000)
The first documented occurrence of Phyllophagy in Pre-Cretaceous insects: Leaf tissues in the gut of Upper Jurassic insects from Southern Kazakhstan. Paleontologicheskii Zhurnal (Paleontological Journal)
Vol. 2000 # 3 P. 73- 81