@misc{indiciaeebd87469d19f,
  title = {The fauna of the Chapman sandstone of Maine, including descriptions of some related species from the Moose River sandstone},
  author = {H. S. Williams and C. L. assisted by Breger},
  year = {1916},
  doi = {10.3133/pp89},
  url = {https://pubs.usgs.gov/publication/pp89},
  note = {Source identifier: pp89}
}