@article{267414,
      author = {Benton, M. J.},
      url = {http://library.usi.edu/record/267414},
      title = {When life nearly died : the greatest mass extinction of  all time /},
      publisher = {Thames & Hudson,},
      recid = {267414},
      pages = {336 p. :},
      address = {New York :},
      year = {2003},
}