@misc{indiciae91b5d3221e28,
  title = {The ammonite Metengonoceras Hyatt, 1903, from the Mowry Shale (Cretaceous) of Montana and Wyoming},
  author = {William A. Cobban and W. J. Kennedy},
  year = {1989},
  doi = {10.3133/b1787l},
  url = {https://pubs.usgs.gov/publication/b1787L},
  note = {Source identifier: b1787L}
}