@article{226753,
      author = {Cobban, William A.,},
      url = {http://library.usi.edu/record/226753},
      title = {Some acanthoceratid ammonites from Upper Cenomanian (Upper  Cretaceous) rocks of Wyoming /},
      publisher = {U.S. G.P.O.,},
      recid = {226753},
      pages = {iii, 17 p., 15 leaves of plates ;},
      address = {Washington :},
      year = {1988},
}