@misc{indiciaed8bacfe589f5,
  title = {Map showing paleontological control of Paleozoic stratigraphy in New England},
  author = {Marland P. Billings and Peter T. Lyttle},
  year = {1981},
  doi = {10.3133/mf1302},
  url = {https://pubs.usgs.gov/publication/mf1302},
  note = {Source identifier: mf1302}
}