@misc{indiciae553e3cec6bfe,
  title = {Impact ejecta layer from the mid-Devonian: possible connection to global mass extinctions.},
  author = {Brooks B Ellwood and Stephen L Benoist and Ahmed El Hassani and Christopher Wheeler and Rex E Crick},
  year = {2003},
  doi = {10.1126/science.1081544},
  url = {https://pubmed.ncbi.nlm.nih.gov/12805544/},
  note = {Source identifier: 12805544}
}