@misc{indiciaec6c6841013d6,
  title = {The fauna of the so-called Dakota formation of northern central Colorado and its equivalent in southeastern Wyoming},
  author = {John B. Reeside},
  year = {1923},
  doi = {10.3133/pp131h},
  url = {https://pubs.usgs.gov/publication/pp131H},
  note = {Source identifier: pp131H}
}