@misc{indiciaea260ffef0bce,
  title = {Histologic structures preserved for 21,300 years.},
  author = {M R Zimmerman and R H Tedford},
  year = {1976},
  doi = {10.1126/science.785601},
  url = {https://pubmed.ncbi.nlm.nih.gov/785601/},
  note = {Source identifier: 785601}
}