@misc{indiciae6b532cf0ad3b,
  title = {Systematics, environment, and biogeography of some Late Cambrian and Early Ordovician trilobites from eastern New York State},
  author = {Michael E. Taylor and Robert B. Halley},
  year = {1974},
  doi = {10.3133/pp834},
  url = {https://pubs.usgs.gov/publication/pp834},
  note = {Source identifier: pp834}
}