@misc{indiciaee4be7f9afcbb,
  title = {Ordovician conodonts and stratigraphy of the ST. Peter sandstone and glen wood shale, central United States},
  author = {B.J. Witzke and R.A. Metzger},
  year = {2005},
  url = {https://pubs.usgs.gov/publication/70027904},
  note = {Source identifier: 70027904}
}