@misc{indiciae86b3914a1669,
  title = {Ichnofossils of the alluvial Willwood Formation (lower Eocene), Bighorn Basin, northwest Wyoming, U.S.A},
  author = {T. M. Bown and M. J. Kraus},
  year = {1983},
  doi = {10.1016/0031-0182(83)90050-0},
  url = {https://pubs.usgs.gov/publication/70011195},
  note = {Source identifier: 70011195}
}