@misc{indiciaeb098f30d32af,
  title = {Conodont index fossil Hindeodus changxingensis Wang fingers greatest mass extinction event},
  author = {I. Metcalfe and R.S. Nicoll and B. R. Wardlaw},
  year = {2007},
  doi = {10.1016/j.palwor.2007.01.001},
  url = {https://pubs.usgs.gov/publication/70032769},
  note = {Source identifier: 70032769}
}