@misc{indiciaef7858bdfa633,
  title = {Evolutionary dynamics of plants and animals: a comparative approach},
  author = {Valentine, J. W. and Tiffney, B. H. and Sepkoski, J. J. Jr and Sepkoski JJ, J. r.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/20040121761},
  note = {Source identifier: 20040121761}
}