@misc{indiciae5fe5cf44235d,
  title = {The oldest fossils.},
  author = {E S Barghoorn},
  year = {1971},
  doi = {10.1038/scientificamerican0571-30},
  url = {https://pubmed.ncbi.nlm.nih.gov/4994765/},
  note = {Source identifier: 4994765}
}