@misc{indiciae9a207e5a8d7c,
  title = {Biostratigraphy and chronostratigraphy of the Cambrian-Ordovician great American carbonate bank},
  author = {John F. Taylor and John E. Repetski and James D. Loch and Stephen A. Leslie},
  year = {2012},
  doi = {10.1306/13331488m983497},
  url = {https://pubs.usgs.gov/publication/70044135},
  note = {Source identifier: 70044135}
}