@article{121762,
      note = {Includes index.},
      author = {Imlay, Ralph W.},
      url = {http://library.usi.edu/record/121762},
      title = {Jurassic (Oxfordian and Late Callovian) ammonites from the  western interior region of the United States /},
      publisher = {U.S. G.P.O.,},
      recid = {121762},
      pages = {iv, 44 p., 26 p. of plates ;},
      address = {Washington :},
      year = {1982},
}