@misc{indiciae8d46c79350c0,
  title = {Report of the Geological Exploration of the Fortieth Parallel, Volume IV: Pal\æontoloy, Part I; Pal\æontology, Part II; Ornithology, Part III},
  author = {Clarence King and F.B. Meek and James Hall and R.P. Whitfield and Robert Ridgway},
  year = {1877},
  doi = {10.3133/70039230},
  url = {https://pubs.usgs.gov/publication/70039230},
  note = {Source identifier: 70039230}
}