@misc{indiciae49addd268365,
  title = {A new Lower Carboniferous tetrapod locality in Iowa},
  author = {J.R. Bolt and R.M. McKay and B.J. Witzke and M.P. McAdams},
  year = {1988},
  doi = {10.1038/333768a0},
  url = {https://pubs.usgs.gov/publication/70013302},
  note = {Source identifier: 70013302}
}