@misc{indiciae8f659d444654,
  title = {The Middle Ordovician Knox unconformity in the Black Warrior Basin},
  author = {Gary S. Dwyer and John E. Repetski},
  year = {2012},
  doi = {10.1306/13331498m983499},
  url = {https://pubs.usgs.gov/publication/70045423},
  note = {Source identifier: 70045423}
}