An Upper Triassic Sphenopteris Showing Evidence of Insect Predation from Petrified Forest National Park, Arizona

@inproceedings{Ash1999AnUT,
  title={An Upper Triassic Sphenopteris Showing Evidence of Insect Predation from Petrified Forest National Park, Arizona},
  author={Sidney R. Ash},
  year={1999}
}