@misc{indiciae27d7d7f5a5a9,
  title = {Stratigraphy, structure, and graptolites of an Ordovician and Silurian sequence in the Terra Cotta Mountains, Alaska Range, Alaska},
  author = {Michael Churkin and Claire Carter},
  year = {1996},
  doi = {10.3133/pp1555},
  url = {https://pubs.usgs.gov/publication/pp1555},
  note = {Source identifier: pp1555}
}