@misc{indiciaef81bd93018af,
  title = {Preliminary analysis of conodont occurrences in Pennsylvanian strata of Ohio and Kentucky},
  author = {B. R. Wardlaw and C. L. Rice and R.G. Stamm},
  year = {1993},
  doi = {10.3133/ofr93312},
  url = {https://pubs.usgs.gov/publication/ofr93312},
  note = {Source identifier: ofr93312}
}