@misc{indiciaed2159a3dea1c,
  title = {Diverse dinosaur-dominated ichnofaunas from the Potomac Group (Lower Cretaceous) Maryland},
  author = {Ray Stanford and Martin G. Lockley and Robert E. Weems},
  year = {2007},
  doi = {10.1080/10420940601049404},
  url = {https://pubs.usgs.gov/publication/70030776},
  note = {Source identifier: 70030776}
}